Oklahoma Electronic Access Control Practice Test
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Questions and Answers
- 1.
Primary power supplies that include Class 2 or Class 3 plug in transformers utilizing receptacles need to be:
- A.
Mechanically secured
- B.
Grounded separately
- C.
Connected to a surge suppressor power strip
- D.
Installed using 14 AWG wire or greater
Correct Answer
A. Mechanically securedExplanation
Primary power supplies that include Class 2 or Class 3 plug in transformers utilizing receptacles need to be mechanically secured. This means that they need to be physically fastened or attached to prevent them from being accidentally disconnected or knocked loose. This is important for safety reasons to ensure that the power supply remains stable and reliable in its connection. Grounding separately, connecting to a surge suppressor power strip, and using 14 AWG wire or greater may also be important considerations for the installation, but the primary requirement is to mechanically secure the power supply.Rate this question:
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- 2.
Control of egress shall comply with the requirements of the applicable codes and standards based on:
- A.
NFPA 70
- B.
Manufacture's specifications
- C.
The security requirements of the building
- D.
The occupancy and usage of the facility
Correct Answer
A. NFPA 70Explanation
The correct answer is NFPA 70 because it is one of the applicable codes and standards that dictate the control of egress. This means that the requirements for controlling the movement of people out of a building in case of an emergency, such as the placement and operation of exit doors and emergency lighting, should comply with the guidelines set forth in NFPA 70. The other options, such as the manufacturer's specifications, the security requirements of the building, and the occupancy and usage of the facility, may also play a role in determining the specific control measures, but NFPA 70 is the primary code to follow.Rate this question:
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- 3.
What measurement is used to test for conductivity of a circuit?
- A.
Current
- B.
Continuity
- C.
Wattage
- D.
Voltage
Correct Answer
B. ContinuityExplanation
Continuity is used to test for conductivity in a circuit. Continuity refers to the uninterrupted flow of current in a circuit. By testing for continuity, we can determine if there is a complete path for the current to flow, indicating that the circuit is conductive. This is typically done using a multimeter or a continuity tester, which checks if there is a complete connection between two points in the circuit. If there is continuity, it means that the circuit is conductive and the current can flow freely.Rate this question:
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- 4.
GSM and CDMA are two types of:
- A.
Public-switched telephone networks
- B.
Two-way radio mesh networks
- C.
Cellular networks
- D.
Internet networks
Correct Answer
C. Cellular networksExplanation
GSM and CDMA are two different technologies used in cellular networks. GSM (Global System for Mobile Communications) is a widely used standard for mobile communication, while CDMA (Code Division Multiple Access) is another technology used in cellular networks. Both GSM and CDMA are used to provide voice and data services to mobile devices. Therefore, the correct answer is cellular networks.Rate this question:
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- 5.
What safety hazards must be must be on power tools used in the work place?
- A.
Properly fitting guards and appropriate safety switches
- B.
Constant pressure switches and reinforced plugs
- C.
Anti-slip handholds and cord storage compartments
- D.
Variable speed control and rechargeable batterie
Correct Answer
A. Properly fitting guards and appropriate safety switchesExplanation
Power tools used in the workplace must have properly fitting guards and appropriate safety switches to ensure the safety of the workers. Properly fitting guards help to prevent accidental contact with moving parts of the tool, reducing the risk of injury. Safety switches are important as they can quickly shut off the power in case of an emergency or if the tool is being used improperly. These safety features are essential in preventing accidents and promoting a safe working environment.Rate this question:
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- 6.
What safety hazards must be must be on power tools used in the work place?
- A.
0.4 ohms
- B.
9.33 ohms
- C.
30 ohms
- D.
60 ohms
Correct Answer
A. 0.4 ohms -
- 7.
When providing first aid to a victim of heat stroke, what should be done first?
- A.
Administer an over-the-counter pain medication to prevent headaches
- B.
Take steps to lower the person’s body temperature
- C.
Have the person lay down with feet elevated to decrease heart rate
- D.
Give the victim caffeinated beverages to maintain alertness
Correct Answer
B. Take steps to lower the person’s body temperatureExplanation
When providing first aid to a victim of heat stroke, the first thing that should be done is to take steps to lower the person's body temperature. Heat stroke is a serious condition that occurs when the body's temperature regulation system fails, and immediate cooling is crucial to prevent further damage. This can be done by moving the person to a cooler environment, removing excess clothing, applying cool water or ice packs to the body, and fanning the person to promote evaporation and cooling. Lowering the body temperature is the priority in treating heat stroke to prevent complications and potentially save the person's life.Rate this question:
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- 8.
Connecting batteries in parallel:
- A.
Increases voltage available
- B.
Decreases voltage available
- C.
Decreases current available
- D.
Increases current available
Correct Answer
D. Increases current availableExplanation
Connecting batteries in parallel increases the current available. When batteries are connected in parallel, their positive terminals are connected together and their negative terminals are connected together. This creates multiple pathways for the current to flow, effectively increasing the total current that can be drawn from the batteries. The voltage across each battery remains the same, but the total current capacity is increased.Rate this question:
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- 9.
What must be used when running cables between floors of a structure?
- A.
Riser cable
- B.
C1 cable
- C.
CL1 or CL3 cable
- D.
Plenum cable
Correct Answer
A. Riser cableExplanation
Riser cable must be used when running cables between floors of a structure. Riser cables are specifically designed for vertical applications and have fire-resistant properties, making them suitable for installation in riser shafts or vertical cable runs. They are constructed with materials that limit the spread of fire and emit low smoke, making them safer in case of a fire. This ensures the protection of the cables and the safety of the building occupants.Rate this question:
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- 10.
12mA equals:
- A.
0.012A
- B.
0.12A
- C.
1.2A
- D.
12.0A
Correct Answer
A. 0.012AExplanation
12mA is equal to 0.012A because 1A is equal to 1000mA. Therefore, to convert milliamperes (mA) to amperes (A), we divide the value in milliamperes by 1000. In this case, 12mA divided by 1000 equals 0.012A.Rate this question:
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- 11.
Where shall the location of the circuit disconnecting the primary power be permanently identified?
- A.
On the final work order for each system
- B.
At the premises security control unit
- C.
At the main breaker panel where the circuit is located
- D.
On the circuit breaker itself
Correct Answer
D. On the circuit breaker itselfExplanation
The location of the circuit disconnecting the primary power should be permanently identified on the circuit breaker itself. This ensures that anyone working on the circuit can easily locate and identify the disconnecting point. It also helps in cases of emergency or maintenance, as the circuit breaker is the primary point of control for the circuit. Identifying the location on the circuit breaker eliminates the need to refer to other documents or panels, making it a convenient and reliable method of identification.Rate this question:
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- 12.
A characteristic of alternating current is that it:
- A.
Travels from the negative terminal of a power source and returns to the positive terminal
- B.
Changes polarity 60 times per second
- C.
Has a constant polarity
- D.
Follows the principles of the Electron Flow Theory
Correct Answer
B. Changes polarity 60 times per secondExplanation
Alternating current is a type of electric current that constantly changes its direction. It flows first in one direction and then reverses, continuously oscillating back and forth. This change in direction is known as polarity reversal. In the case of the given answer, it states that alternating current changes its polarity 60 times per second. This is commonly referred to as the frequency of the AC current, which in many countries is standardized at 60 hertz. Therefore, the answer correctly explains one of the characteristics of alternating current.Rate this question:
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- 13.
In residential construction, workers must be protected by a harness if they can fall more than how many feet?
- A.
3
- B.
6
- C.
12
- D.
15
Correct Answer
B. 6Explanation
In residential construction, workers must be protected by a harness if they can fall more than 6 feet. This is because falls from heights can result in serious injuries or even fatalities, and it is important to ensure the safety of workers. By using a harness, workers are secured and protected in case they accidentally fall from a height greater than 6 feet. This safety measure helps to prevent accidents and promote a safe working environment.Rate this question:
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- 14.
A licensed technician or salesperson shall only work under the supervision of:
- A.
A licensed manager
- B.
A NICET II-certified technician
- C.
Another licensed technician
- D.
The shop foreman
Correct Answer
A. A licensed managerExplanation
A licensed technician or salesperson is required to work under the supervision of a licensed manager. This ensures that there is proper oversight and guidance from someone who has the necessary qualifications and experience to ensure the work is being carried out correctly and in compliance with regulations. The licensed manager is responsible for providing direction, support, and ensuring that all work is performed safely and efficiently.Rate this question:
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- 15.
Conductors under a single terminal shall be:
- A.
The same gauge and composition
- B.
Identified and marked
- C.
Color coded by the manufacturer
- D.
Color coded per the installing company's policy
Correct Answer
A. The same gauge and compositionExplanation
Conductors under a single terminal should be of the same gauge and composition. This ensures that the electrical current flows evenly through all the conductors, preventing any imbalances or overloading. Having different gauges or compositions could lead to unequal distribution of current and potentially cause damage to the electrical system. Therefore, it is important to use conductors that are consistent in size and material to maintain the integrity and safety of the electrical circuit.Rate this question:
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- 16.
A technician experiences sudden weakness on the right side of her body and is having trouble speaking and understanding simple statements. What is the likely cause of her symptoms?
- A.
Dehydration
- B.
High blood sugar
- C.
Stroke
- D.
Low blood sugar
Correct Answer
C. StrokeExplanation
The technician's sudden weakness on the right side of her body and difficulty speaking and understanding simple statements are indicative of a stroke. A stroke occurs when the blood supply to the brain is disrupted, leading to the death of brain cells. These symptoms are commonly associated with a stroke, as it affects the functioning of the brain. Dehydration, high blood sugar, and low blood sugar may cause various symptoms, but they are not typically associated with weakness on one side of the body and speech difficulties.Rate this question:
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- 17.
In a series circuit, _____________ is additive and _____________ remains the same:
- A.
Voltage, resistance
- B.
Voltage, current
- C.
Current, voltage
- D.
Current, resistance
Correct Answer
B. Voltage, currentExplanation
In a series circuit, voltage is additive because the total voltage across the circuit is equal to the sum of the individual voltages across each component. On the other hand, current remains the same in a series circuit because there is only one path for the current to flow and it must be the same throughout the circuit.Rate this question:
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- 18.
On what setting should a meter be placed to read a circuit status without removing one side of the circuit?
- A.
A
- B.
W
- C.
V
- D.
Ohms
Correct Answer
D. OhmsExplanation
The meter should be placed on the Ohms setting to read the circuit status without removing one side of the circuit. The Ohms setting measures the resistance in the circuit, allowing the meter to determine if the circuit is open or closed without the need to disconnect any components. This setting is useful for troubleshooting and diagnosing circuit issues without causing any disruption to the circuit itself.Rate this question:
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- 19.
What is a “Delayed Egress”?
- A.
A doorway designed to permit only one person through at a time
- B.
An arrangement of locking devices and sensors that permits only one vestibule door to be opened at a time
- C.
A device or system that stops an individual from opening a door for 15 seconds
- D.
A device or system that allows an intruder into a secure area that remains locked until authorities arrive
Correct Answer
C. A device or system that stops an individual from opening a door for 15 secondsExplanation
A "Delayed Egress" refers to a device or system that prevents an individual from opening a door for a specific duration of time, in this case, for 15 seconds. This delay is typically implemented for security purposes, allowing authorities or security personnel to respond to the situation before the door can be opened. It helps to prevent unauthorized access or escape in certain situations.Rate this question:
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- 20.
In reference to cabling, UTP means:
- A.
Universal twisted pair
- B.
Unshielded twisted pair
- C.
Universal twisted plenum
- D.
Unshielded twisted plenum
Correct Answer
B. Unshielded twisted pairExplanation
The correct answer is "Unshielded twisted pair". In cabling, UTP refers to unshielded twisted pair, which is a type of cable commonly used for Ethernet networks. UTP cables consist of pairs of twisted wires, which help reduce interference and crosstalk. Unlike shielded cables, UTP cables do not have any additional shielding, making them less expensive and easier to install. UTP cables are widely used in residential and commercial applications for networking purposes.Rate this question:
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- 21.
When using a mulitmeter to measure direct current:
- A.
Place the meter leads in series with the circuit
- B.
Disconnect power to the circuit
- C.
Place the meter leads in parallel with the circuit
- D.
D. Set the meter range on a value less than the expected reading Set the meter range on a value less than the expected reading
Correct Answer
B. Disconnect power to the circuitExplanation
When using a multimeter to measure direct current, it is important to disconnect power to the circuit before placing the meter leads in series with the circuit. This is done to ensure safety and prevent any potential damage to the multimeter or the circuit. By disconnecting power, it eliminates the risk of electric shock and allows for accurate measurement of the current flowing through the circuit.Rate this question:
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- 22.
When a REX button is pressed on an access controlled system, the egress door shall remain open for how many seconds?
- A.
15
- B.
30
- C.
45
- D.
60
Correct Answer
B. 30Explanation
When the REX (Request to Exit) button is pressed on an access controlled system, the egress door will remain open for 30 seconds. This allows individuals to exit the controlled area without the need for a key or access card. It provides a sufficient amount of time for people to safely exit before the door automatically closes and re-engages the access control system.Rate this question:
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- 23.
0.0500A equals
- A.
0.5mA
- B.
5A
- C.
50A
- D.
500A
Correct Answer
A. 0.5mAExplanation
0.0500A is equivalent to 0.5mA because 1mA is equal to 0.001A. Therefore, to convert 0.0500A to mA, we multiply it by 1000. This gives us 50mA. However, the given options do not include 50mA, so we need to convert it further. Dividing 50mA by 100 gives us 0.5mA, which matches the given answer.Rate this question:
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- 24.
What type of network address is needed to remotely view a NVR or DVR on a long term basis?
- A.
Dynamic
- B.
Dynamic Host Configuration Protocol
- C.
Media Access Control
- D.
Static
Correct Answer
B. Dynamic Host Configuration ProtocolExplanation
Dynamic Host Configuration Protocol (DHCP) is needed to remotely view a NVR or DVR on a long term basis. DHCP is a network protocol that automatically assigns IP addresses to devices on a network. By using DHCP, the NVR or DVR can obtain an IP address dynamically, allowing it to be accessed remotely over an extended period of time. This eliminates the need for manually configuring a static IP address, which may change or conflict with other devices on the network.Rate this question:
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- 25.
When measuring current draw in a circuit, meter leads must be placed:
- A.
In series with the circuit with power removed from the circuit
- B.
In series with the circuit with the circuit intact
- C.
In parallel with the circuit with power removed from the circuit
- D.
In parallel with the circuit with the circuit intact
Correct Answer
B. In series with the circuit with the circuit intactExplanation
When measuring current draw in a circuit, the meter leads must be placed in series with the circuit with the circuit intact. This is because current is the flow of electric charge through a circuit, and by placing the meter leads in series, the current flowing through the circuit will pass through the meter. Placing the meter leads in parallel with the circuit would not allow the current to pass through the meter and would not provide an accurate measurement. Additionally, removing the power from the circuit is not necessary as the meter itself will have a high resistance, which will not interfere with the circuit's operation.Rate this question:
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- 26.
When engaged in alarm and locksmith work, the company’s license number must be at least 2” in size and displayed:
- A.
On all sides of all vehicles where the company name is displayed
- B.
In the windshield and on the bumper of all vehicles
- C.
On the driver’s door of all vehicles
- D.
In the center of the rear bumper on all vehicles
Correct Answer
A. On all sides of all vehicles where the company name is displayedExplanation
The correct answer is "On all sides of all vehicles where the company name is displayed." This means that the license number must be visible on every side of the vehicle where the company name is also displayed. This ensures that the license number is easily visible and identifiable by anyone who may need to see it, such as customers or law enforcement officials. It helps to establish the legitimacy and credibility of the company and its employees when engaged in alarm and locksmith work.Rate this question:
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- 27.
What electromechanical device is typically installed in a door frame?
- A.
Turnstile
- B.
Electric bolt
- C.
Magnetic lock
- D.
Door strike
Correct Answer
D. Door strikeExplanation
A door strike is an electromechanical device that is typically installed in a door frame. It is designed to secure a door by latching onto a strike plate when the door is closed. When the door is unlocked or a signal is received, the door strike releases the latch, allowing the door to open. This mechanism is commonly used in access control systems to control entry and exit through doors.Rate this question:
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- 28.
What type of building material most interferes with wireless communications?
- A.
Sheetrock/gypsum board
- B.
Plastic
- C.
Concrete
- D.
Metal
Correct Answer
D. MetalExplanation
Metal is the building material that most interferes with wireless communications. Metal has a high conductivity, which can block or reflect wireless signals, causing interference. This interference can result in poor signal strength, dropped calls, and slow internet speeds. Metal objects such as steel beams, metal roofs, or even metal furniture can disrupt wireless signals and reduce their range and reliability. Therefore, metal is the material that poses the greatest challenge for wireless communications.Rate this question:
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- 29.
A technician can prevent damage to an electronic circuit board by:
- A.
Degaussing all circuits
- B.
Discharging static electricity
- C.
Washing hand thoroughly
- D.
Cooling the board
Correct Answer
B. Discharging static electricityExplanation
Discharging static electricity is important in preventing damage to electronic circuit boards because static electricity can build up on surfaces and components, and when discharged, it can cause a sudden surge of electrical energy that can damage or destroy sensitive electronic components. By discharging static electricity, the technician can ensure that there is no excess electrical charge that could potentially harm the circuit board.Rate this question:
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- 30.
Which type of wire carries the most current
- A.
12 AWG
- B.
18 AWG
- C.
22 AWG
- D.
24 AWG
Correct Answer
A. 12 AWGExplanation
The 12 AWG wire carries the most current because the American Wire Gauge (AWG) system assigns a higher gauge number to thinner wires. Therefore, the 12 AWG wire is thicker than the 18, 22, and 24 AWG wires, allowing it to have a lower resistance and handle a greater amount of current.Rate this question:
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- 31.
According to NFPA 70, what determines the type of insulation used on conductors in an installation?
- A.
Type of raceway
- B.
Length of conductor run
- C.
Environment
- D.
Current of the circuit
Correct Answer
C. EnvironmentExplanation
The type of insulation used on conductors in an installation is determined by the environment. The environment refers to the conditions in which the conductors will be installed, such as temperature, moisture, and exposure to chemicals or other factors that could potentially damage the insulation. Different environments may require different types of insulation to ensure the safety and longevity of the conductors.Rate this question:
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- 32.
What device is typically used as a door position sensor
- A.
REX button
- B.
Magnetic reed switch
- C.
REX motion sensor
- D.
30 second timer delay
Correct Answer
B. Magnetic reed switchExplanation
A magnetic reed switch is typically used as a door position sensor. This device consists of two metal reeds that are enclosed in a glass tube filled with inert gas. When a magnet is brought close to the switch, the reeds attract each other and make contact, completing the circuit. This change in the switch's state can be used to detect the position of a door, as it will open or close the circuit depending on its position. Therefore, a magnetic reed switch is an ideal choice for monitoring the status of a door.Rate this question:
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- 33.
A REX button shall be how many inches from the finished floor?
- A.
42 to 54
- B.
48 to 60
- C.
42 to 48
- D.
40 to 48
Correct Answer
D. 40 to 48Explanation
The REX button should be installed at a height ranging from 40 to 48 inches from the finished floor. This ensures that it is easily accessible for individuals with varying heights and disabilities. Placing it within this range allows for convenient operation and compliance with accessibility standards.Rate this question:
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- 34.
Which clue indicates an electrical hazard?
- A.
Warm tools or cords
- B.
Use of extension cords
- C.
Flexible wiring
- D.
Insulated wires
Correct Answer
A. Warm tools or cordsExplanation
The clue that indicates an electrical hazard is warm tools or cords. When tools or cords become warm while in use, it suggests that there may be an excessive flow of electricity or a malfunction in the electrical system, which can potentially lead to a hazardous situation such as a fire or electric shock.Rate this question:
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- 35.
A delayed egress lock must open immediately when:
- A.
A crash bar is activated
- B.
The security system is activated
- C.
An exit button is pushed
- D.
The fire alarm is activated
Correct Answer
D. The fire alarm is activatedExplanation
When the fire alarm is activated, it is crucial for a delayed egress lock to open immediately. This is because during a fire emergency, quick and easy access to exits is essential for the safety and evacuation of individuals. Delayed egress locks are designed to delay the opening of a door for a specific period of time to prevent unauthorized exits, but in the event of a fire, it is necessary for the lock to release immediately to ensure a swift escape.Rate this question:
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- 36.
What should be considered when selecting authority levels for credentials?
- A.
Construction of door
- B.
Type of reader
- C.
Type of locking hardware
- D.
Time of day
Correct Answer
D. Time of dayExplanation
When selecting authority levels for credentials, the time of day should be considered. This means that the access privileges granted to individuals may vary depending on the specific time of day. For example, during regular working hours, employees may have full access to certain areas, but after hours, their access may be restricted to only essential areas. This ensures that security measures are in place and tailored to different time periods, enhancing overall safety and control over access to certain areas.Rate this question:
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- 37.
Upon conviction, any individual violating any provision of the Oklahoma Alarm and Locksmith Industry Act shall be guilty of a misdemeanor punishable by up to one year confinement in the county jail and/or a maximum fine of:
- A.
$100
- B.
$200
- C.
$500
- D.
$1,000
Correct Answer
C. $500Explanation
Upon conviction, any individual violating any provision of the Oklahoma Alarm and Locksmith Industry Act can be punished with a maximum fine of $500. This means that if someone is found guilty of breaking the rules outlined in the Act, they may have to pay a fine of up to $500 as part of their punishment.Rate this question:
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- 38.
What is the most likely cause when a magnetic lock does not release upon reading a credential?
- A.
A broken wire to the magnetic lock
- B.
An invalid credential
- C.
An alarm condition in the integrated fire alarm system
- D.
A broken wire to the REX device
Correct Answer
B. An invalid credentialExplanation
An invalid credential is the most likely cause when a magnetic lock does not release upon reading a credential. This means that the credential being used is not recognized or authorized by the system, preventing the lock from being released.Rate this question:
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- 39.
According to NFPA 70, direct buried cables must be:
- A.
Temperature rated
- B.
Protected from animals that burrow underground
- C.
Armored and jacketed
- D.
Arranged as so to prevent damage when the ground settles
Correct Answer
D. Arranged as so to prevent damage when the ground settlesExplanation
Direct buried cables must be arranged in a way to prevent damage when the ground settles. This is important because settlement of the ground can cause the cables to be exposed or damaged, leading to potential electrical hazards or disruptions in the supply of electricity. By arranging the cables properly, such as using proper depth of burial and providing adequate support, the cables can be protected from the effects of ground settlement and ensure safe and reliable electrical distribution.Rate this question:
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- 40.
What type of accident is the leading cause of occupational fatalities and injuries?
- A.
Caught-in/between
- B.
Electrocution
- C.
Fall
- D.
Struck by an object
Correct Answer
C. FallExplanation
Falls are the leading cause of occupational fatalities and injuries. This is because workers often have to work at heights or on unstable surfaces, increasing the risk of falling. Falls can result in severe injuries or even death, making it a major concern in occupational safety. Employers need to implement proper safety measures, such as providing fall protection equipment and training, to prevent these accidents and protect their workers.Rate this question:
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- 41.
Where the automatic REX device is a motion sensor, it shall be listed for the purpose and:
- A.
Installed so that only intentional requests are executed
- B.
Installed in parallel with the manual REX device
- C.
Powered by the same source as the door lock
- D.
Triggered using PIR rechnology only
Correct Answer
A. Installed so that only intentional requests are executedExplanation
The automatic REX device should be installed in a way that ensures only intentional requests are executed. This means that the device should not be triggered accidentally or by any other means than a deliberate action from a person. This is important for security purposes, as it prevents unauthorized access through the door.Rate this question:
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- 42.
According to NFPA 70, which statement regarding underground cable and conductors is true?
- A.
Cable can be constructed of standard electrical wire
- B.
Conductors must be silicone-based
- C.
Insulated conductors and cables must be listed for use in wet locations
- D.
Since conduit is used, cable can be constructed of any type of wire
Correct Answer
C. Insulated conductors and cables must be listed for use in wet locationsExplanation
Insulated conductors and cables must be listed for use in wet locations according to NFPA 70. This means that the cables and conductors used underground must have a specific listing or certification indicating that they are suitable for use in wet environments. This is important because underground cables and conductors are often exposed to moisture, which can potentially cause electrical hazards if the insulation is not designed to withstand wet conditions.Rate this question:
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- 43.
A REX button shall be located within how many feet of the secured door?
- A.
2
- B.
5
- C.
12
- D.
15
Correct Answer
B. 5Explanation
The correct answer is 5. A REX (Request to Exit) button is a device used to request access to exit a secured door. It should be located within 5 feet of the secured door to provide easy and convenient access for individuals who need to exit the area. Placing the REX button within this proximity ensures that it can be easily reached in case of an emergency or when someone needs to exit quickly.Rate this question:
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- 44.
Personal protective equipment should be used to protect employees from workplace hazards when:
- A.
It is too expensive to eliminate hazards with engineering controls
- B.
Employers do not have written policies and procedures to guide work practices
- C.
It is not feasible time-wise to train employees on safer work practices
- D.
Hazards cannot be eliminated with an engineering or workplace controls
Correct Answer
D. Hazards cannot be eliminated with an engineering or workplace controlsExplanation
Personal protective equipment should be used when hazards cannot be eliminated through engineering controls or workplace controls. This means that if it is not possible to eliminate the hazards by modifying the workplace or the work processes, then personal protective equipment becomes necessary to protect employees from those hazards. This could be due to various reasons such as the high cost of implementing engineering controls, the absence of written policies and procedures to guide work practices, or the lack of time to train employees on safer work practices. In such situations, personal protective equipment acts as a last line of defense to ensure the safety of employees.Rate this question:
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- 45.
A power tool has a 3-pronged plug but the only available outlets are 2-pronged. What should the technician do?
- A.
Remove the outlet and plug and hardwire the tool
- B.
Locate a 3-pronged outlet
- C.
Use a 3-prong to 2-prong adapter
- D.
Remove the ground prong from the power cord of the tool
Correct Answer
B. Locate a 3-pronged outletExplanation
The technician should locate a 3-pronged outlet because removing the outlet and plug and hardwiring the tool may not be feasible or safe. Using a 3-prong to 2-prong adapter may also not be ideal as it would eliminate the grounding function of the tool. Removing the ground prong from the power cord of the tool would compromise the safety of the tool, as the grounding prong is designed to protect against electrical shocks. Therefore, the best solution is to find a 3-pronged outlet to ensure proper and safe operation of the power tool.Rate this question:
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- 46.
When multiple persons enter via a single access-granted transaction, this is called:
- A.
Mustering
- B.
Multiparty admission
- C.
Piggybacking
- D.
Anti-passback
Correct Answer
C. PiggybackingExplanation
Piggybacking refers to the act of multiple persons entering a restricted area using a single access-granted transaction. It occurs when one person gains access legitimately, and another person enters alongside them without proper authorization or authentication. This can be a security risk as it allows unauthorized individuals to gain entry without being detected.Rate this question:
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- 47.
A blown fuse in a power supply usually indicates:
- A.
Too much resistance
- B.
Inadequate voltage
- C.
Too much current is being drawn
- D.
The power supply is too large
Correct Answer
C. Too much current is being drawnExplanation
A blown fuse in a power supply usually indicates that too much current is being drawn. When the current exceeds the rated value of the fuse, it causes the fuse to blow, interrupting the circuit and protecting the components from damage. This can happen due to various reasons such as a short circuit, a malfunctioning component, or an overload in the circuit. By blowing the fuse, it prevents further damage and ensures the safety of the power supply and connected devices.Rate this question:
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- 48.
A characteristic of direct current is that it:
- A.
Changes polarity
- B.
Has a constant polarity
- C.
Cannot be stored
- D.
Is produced by a transformer
Correct Answer
B. Has a constant polarityExplanation
Direct current (DC) is characterized by having a constant polarity, meaning that the flow of electric charge remains in one direction. Unlike alternating current (AC), which periodically changes direction, DC maintains a steady flow of electrons in a single direction. This property of DC makes it suitable for various applications such as batteries, electronic devices, and certain types of motors that require a consistent flow of electricity in one direction.Rate this question:
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- 49.
When using a multimeter to measure resistance, the technician should:
- A.
Disconnect the circuit from the control equipment
- B.
Set the meter to the amperes setting
- C.
Leave the circuit connected to the control equipment
- D.
Put the meter in series with the circuit
Correct Answer
A. Disconnect the circuit from the control equipmentExplanation
When measuring resistance with a multimeter, it is important to disconnect the circuit from the control equipment. This is because the multimeter needs to have a direct connection with the component being measured in order to accurately determine its resistance. If the circuit is not disconnected, the multimeter may measure the resistance of other components or paths in the circuit, leading to inaccurate readings. Additionally, leaving the circuit connected to the control equipment may pose a safety risk, as it could interfere with the measurements or cause damage to the multimeter.Rate this question:
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- 50.
DC stands for:
- A.
Diminishing current
- B.
Digital current
- C.
Direct current
- D.
Distributed current
Correct Answer
C. Direct currentExplanation
DC stands for Direct Current. Direct current is the flow of electric charge in one direction, without any change in polarity. It is the opposite of alternating current (AC), which periodically reverses direction. DC is commonly used in batteries, electronic devices, and power transmission systems that require a steady and constant flow of electric current.Rate this question:
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Mar 07, 2024Quiz Edited by
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Mar 01, 2015Quiz Created by
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