Daddys Quiz Part 5

The correct answer is rolled up and placed in a round container. This method ensures that the rubber blanket is protected from damage and kept in a compact and organized manner. Rolling up the blanket helps to prevent creases and folding marks, which can affect its performance. Placing it in a round container further protects it from dust, moisture, and any potential damage. This method also allows for easy transportation and storage, as the container can be easily stacked or placed in a designated area.

When installing services, the connection that should always be made first is the neutral connection. The neutral wire carries the return current from the electrical load back to the source, ensuring that the circuit is complete and balanced. This connection is crucial for the proper functioning and safety of the electrical system. By connecting the neutral first, it ensures that the circuit is properly grounded and reduces the risk of electrical shocks or malfunctions.

To determine the lifting capacity of the boom for a specific angle and extension required, one should refer to the equipment chart. The equipment chart provides detailed information about the lifting capacity of the boom based on different angles and extensions. By consulting the chart, one can accurately determine the maximum weight that the boom can lift in a given configuration, ensuring safe and efficient operation.

When installing a safety ground, the connection that is made first is between the ground and system neutral. This connection is crucial for providing a path for electrical current to flow safely to the ground in the event of a fault or electrical surge. By connecting the ground and system neutral first, any excess current can be directed away from the electrical system and into the ground, preventing potential damage to equipment and ensuring the safety of individuals.

A capacitor is a device used for storing an electric charge and introducing capacitance into a circuit. It is capable of storing energy in an electric field between two conductive plates. When a voltage is applied across the plates, one plate accumulates positive charge while the other accumulates negative charge. This storage of charge allows capacitors to release energy quickly when needed, making them useful in many electronic applications. A generator and voltage generator are devices that produce electrical energy, while a transformer is used to transfer electrical energy between different circuits.

Equi-potential grounding is a method of grounding primary conductors that ensures all the materials the lineman may contact stay at the same voltage level in the event of accidental re-energization. This means that if a lineman accidentally comes into contact with a live conductor, the equi-potential grounding system will ensure that all other conductive materials, such as the lineman's tools or the surrounding infrastructure, are at the same voltage level as the conductor. This helps to minimize the risk of electric shock or injury to the lineman and others in the vicinity.

Dead front refers to equipment that, under normal conditions, has no live parts exposed. This means that all live parts are concealed behind panels or barriers, ensuring the safety of individuals who may come into contact with the equipment. Dead center, dead end, and dead man carry do not accurately describe the concept of equipment with no live parts exposed.

The turns ratio of a transformer is the ratio of the number of turns in the primary winding to the number of turns in the secondary winding. In this case, the turns ratio is 30:1 or 30/1, which means that there are 30 turns in the primary winding for every 1 turn in the secondary winding. This ratio determines the voltage transformation between the primary and secondary sides of the transformer.

The correct method for checking a rubber blanket is to roll it from corner to corner and check both sides. This ensures that all areas of the blanket are thoroughly inspected for any damage or wear. Rolling it side to side or stretching it diagonally may not provide an accurate assessment of the blanket's condition. Additionally, an air test is not mentioned and therefore not the correct method for checking a rubber blanket.

To calculate the voltage required to force a certain amount of current through a resistance, we can use Ohm's Law which states that V (voltage) = I (current) x R (resistance). In this case, the current is given as 9 amps and the resistance is given as 25 ohms. Plugging these values into the formula, we get V = 9 x 25 = 225 volts. Therefore, the correct answer is 225.

Putting a shunt capacitor on a line is done to correct power factor. Power factor is a measure of how effectively electrical power is being used. When the power factor is low, it means that the electrical system is not efficiently utilizing the power being supplied. By adding a shunt capacitor, the reactive power component is reduced, which improves the power factor. This helps in minimizing energy losses, improving voltage stability, and increasing the overall efficiency of the electrical system.

The given answer "Yes" suggests that to test a pole for safety before climbing, one should visually check from the ground to the top, check for any signs of rot, prod with a bar or sharp object, and dig up the butt. This implies that all of these actions are necessary to ensure the pole is safe to climb.

A web hoist is a type of lifting equipment that uses a web strap to lift and lower objects. It is commonly used in hot line procedures, where insulated handle jacks with web straps are used to safely handle electrical equipment. The other options, jack strap, chain hoist, and capstan hoist, do not specifically mention the use of a web strap or insulation, making them less suitable for hot line procedures.

Grounds on rolling sheaves refer to the grounding of the rolling sheaves, which are pulley-like devices used in various mechanical systems. These grounds are essential for safety reasons as they help to prevent electrical shocks and ensure proper functioning of the system. By grounding the rolling sheaves, any excess electrical charge or static electricity is safely discharged to the ground, reducing the risk of electrical hazards. This type of grounding is commonly used in machinery and equipment that involves moving parts or rotating components.

When choosing a transformer for use, the first consideration is the primary and secondary voltage rating. This is because the voltage rating determines the compatibility of the transformer with the electrical system it will be connected to. The primary voltage rating indicates the voltage at which the transformer will receive power, while the secondary voltage rating indicates the voltage at which it will deliver power. Therefore, selecting a transformer with the appropriate voltage rating is crucial to ensure safe and efficient operation.

A tap changer is a device that allows for the adjustment of the number of effective turns in the primary or secondary winding of a transformer. By reducing or increasing the effective turns, the tap changer can vary the ratio of the transformer. This adjustment is useful in situations where the input or output voltage needs to be changed to match the desired electrical requirements. Therefore, a tap changer is the correct answer as it directly relates to the variation of the ratio by adjusting the effective turns in the winding.

The resistance of an electric device can be calculated using Ohm's Law, which states that resistance (R) is equal to voltage (V) divided by current (I). In this case, the voltage is given as 120 volts and the current is given as 8 amps. So, the resistance can be calculated as 120 volts divided by 8 amps, which equals 15 ohms.

The approximate counter EMF of a transformer with no load on the secondary is equal to the primary voltage, which in this case is 7200 volts. This is because the counter EMF is equal to the primary voltage when there is no load connected to the secondary winding. Therefore, the correct answer is 7200 volts.

A shock load refers to a sudden and intense force or impact applied to a load. In this scenario, when a load drops a distance and is abruptly stopped by the line before hitting the ground, it experiences a sudden and severe stress. This sudden and intense force is what is known as a shock load.

The purpose of a pole band is to establish an equi-potential working zone. This means that it helps to ensure that the electrical potential is the same at all points within the working zone, reducing the risk of electric shock or other electrical hazards. By providing a conductive path around the pole, the pole band helps to prevent potential differences that could occur due to electrical faults or other factors. This helps to create a safer working environment for those performing tasks on or near the pole.

The correct answer is an insulated stand off. A parking stand is a device used to keep a vehicle elevated off the ground, typically for maintenance or storage purposes. An insulated stand off refers to a stand off that is designed to provide electrical insulation, preventing the transfer of electrical current between the vehicle and the ground. This is important to ensure safety when working on electrical systems or when dealing with electric vehicles.

The length of a street light davit arm along the road is determined by the distance of the pole from the curb. The distance between the pole and the curb determines how far the arm needs to extend to properly position the light head over the road. If the pole is closer to the curb, the arm will need to be shorter. Conversely, if the pole is further away from the curb, the arm will need to be longer to reach the desired position. Therefore, the distance of the pole from the curb is a crucial factor in determining the length of the davit arm.

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A relief valve is designed to prevent the hydraulic system from over pressurizing by releasing excess pressure. When the pressure in the system exceeds a certain set point, the relief valve opens, allowing the excess fluid to escape and relieving the pressure. This helps to protect the system from damage and ensures that the pressure remains within safe limits. Therefore, the relief valve is the correct answer to the question.

If there is no voltage at the termination block in the head of the street light, the next logical step would be to check the secondary connections. The secondary connections are responsible for distributing the voltage from the termination block to the various components of the street light, including the photo cell, bulb, and relay. By checking the secondary connections, it can be determined if there is a fault or loose connection that is preventing the voltage from reaching the termination block.

Rubber line hoses should be inspected for cuts or corona damage by turning them inside out. By doing so, any potential corona damage, which is a phenomenon that occurs due to electrical discharges, can be visually detected. This method allows for a thorough examination of the hose's inner surface, where corona damage is more likely to occur. It is a reliable way to identify any signs of damage and ensure the integrity of the hoses.

When pulling up a hot conductor, a spiral link stick must be placed between the sling and the jack. This is because a spiral link stick is specifically designed to provide insulation and protection against electrical currents. It helps to prevent any contact between the hot conductor and the sling or jack, reducing the risk of electrical shock or damage.

The correct answer is "a light sensitive switch." A photoelectric control in a streetlight is a device that detects the presence or absence of light. It is designed to automatically turn the streetlight on when it gets dark and off when it gets light. This is achieved by using a light sensitive switch that detects the amount of light in the surroundings and triggers the streetlight accordingly.

Removing risers from secondary bushings is a sure method of protecting backfeed from the secondary of a transformer. Risers are the insulating supports that elevate the bushings above the transformer tank. By removing the risers, the secondary bushings are brought down to the same level as the transformer tank, reducing the risk of backfeed. This ensures that any potential backfeed is prevented from flowing back into the transformer and causing damage or safety hazards.

In a street light fixture, the light pattern is affected by the refractor and reflector. The refractor is responsible for directing and focusing the light emitted by the bulb, while the reflector helps to enhance and distribute the light in a desired pattern. Together, these two components play a crucial role in determining the effectiveness and efficiency of the street light in illuminating the surrounding area.

The given statement suggests that "mouth to mouth" is the best method for resuscitation at the pole top. This implies that in emergency situations at the pole top, using mouth to mouth resuscitation is the most effective way to revive someone. The answer "Yes" indicates agreement with this statement, implying that the given method is indeed the best option for resuscitation in such circumstances.

A water stop is the most effective solution for preventing water from entering the cable. It is specifically designed to create a barrier that stops water from seeping through. This device is typically made of durable materials that are resistant to water and can withstand various weather conditions. By installing a water stop, the cable is protected from potential water damage, ensuring its proper functioning and longevity.

Two parallel transformers share the load evenly. This means that each transformer carries an equal portion of the total load. The load is not proportional to the difference in KVA size. Regardless of the KVA size difference between the transformers, the load is distributed equally between them.

The correct answer is high pressure sodium. High pressure sodium bulbs have a high efficacy of 100 lumens/watt, meaning they produce 100 lumens of light for every watt of power consumed. Additionally, they have a long burning time of 2400 hours. Mercury vapor and metal halide bulbs also have high efficacies, but low pressure sodium bulbs have a much lower efficacy of around 180 lumens/watt. Therefore, high pressure sodium is the most likely type of bulb being used.

The turns ratio of a transformer is determined by the number of turns in each of the windings. The turns ratio is a measure of the ratio of the number of turns in the primary winding to the number of turns in the secondary winding. It determines the voltage transformation ratio between the primary and secondary sides of the transformer. By increasing or decreasing the number of turns in the windings, the turns ratio can be adjusted to achieve the desired voltage transformation. Therefore, the correct answer is "by the number of turns in each of the windings."

When using an axillary arm, the maximum angle of bisect tension that is allowed is 5 degrees. This means that the arm should not be positioned at an angle greater than 5 degrees from the midline of the body. This restriction is likely in place to ensure proper alignment and stability of the arm, minimizing strain and potential injury to the user.

The bowline knot is commonly used in pole top rescue. This knot creates a secure loop that can be easily tied and untied, making it ideal for rescue situations. It is known for its strength and reliability, as it does not slip or loosen under tension. The bowline knot is often used in activities such as climbing, sailing, and rescue operations due to its simplicity and effectiveness.

Potential transformers (PTs) are used to reduce the line voltage for metering purposes. PTs are typically used in electrical power systems to step down high voltage levels to a lower, more manageable voltage level that can be safely measured by meters and instruments. By reducing the line voltage, PTs ensure accurate and safe measurement of electrical parameters such as voltage, current, and power.

The combination ACB represents one forward rotation followed by one reverse rotation. This is because the first letter A is followed by C, indicating a forward rotation, and then followed by B, indicating a reverse rotation. Similarly, the combination ABC represents one forward rotation followed by one reverse rotation, as the letters are arranged in the order A, B, C.

When work is to be done on the secondary circuit of a CT with the primary circuit still carrying current, it is necessary to short and ground the secondary terminals of the CT. This is because the secondary circuit of a CT is designed to carry a very low voltage, and shorting and grounding the terminals ensures that any residual current is safely discharged. This prevents the risk of electrical shock or damage to equipment. It is important to take this precautionary measure before performing any work on the secondary circuit.

Heat from the pressure and friction of oil is dissipated through the radiator. The radiator is designed to remove heat from the hydraulic oil by transferring it to the surrounding air. As the oil passes through the radiator, the heat is transferred to the metal fins of the radiator, which increases the surface area available for heat dissipation. The surrounding air then cools the metal fins, effectively dissipating the heat from the oil. This process helps to maintain the optimal temperature of the hydraulic system and prevent overheating.

A hydraulic motor is a device that converts hydraulic flow and pressure into mechanical energy. It uses the pressure of a hydraulic fluid to generate rotational motion, which can be used to power various machinery and equipment. Unlike a hydraulic pump that generates flow and pressure, a hydraulic motor takes in the flow and pressure and converts it into mechanical power. Therefore, a hydraulic motor is the correct answer for this question.

The correct answer is "rope snubbing bracket - 1000lbs". This piece of equipment is called a rope snubbing bracket and it has a safe work load of 1000lbs. This means that it can safely handle a maximum load of 1000lbs without any risk of failure or damage.

The correct answer is 1 ua/kv (phase to phase voltage). This means that the maximum leakage current on the boom of a truck to be used in live line work should be 1 microampere per kilovolt of phase to phase voltage. This is important because it ensures that the leakage current is kept at a safe and minimal level, reducing the risk of electrical shock or damage to the equipment.

High or low pressure sodium bulbs could ignite if broken and exposed to water. This is because these types of bulbs contain a reactive metal, sodium, which can react with water to form sodium hydroxide and release hydrogen gas. The release of hydrogen gas can lead to an explosion or fire if ignited. Therefore, it is important to handle and dispose of these bulbs carefully to avoid any accidents.

The arc follower enables tip replacement after repeated load break operation. This suggests that the arc follower is a component or mechanism that allows for the replacement of the tip of a device or tool that is used for load break operations. This is important because repeated load break operations can cause wear and tear on the tip, making it necessary to replace it in order to maintain the functionality and effectiveness of the device or tool.

The purpose of a ballast in a street light is to limit the current and transform the voltage. By limiting the current, the ballast ensures that the street light operates within its designed parameters and prevents any damage that could be caused by excessive current. Additionally, the ballast transforms the voltage to match the requirements of the street light, allowing it to function properly.

Concentric neutral cable refers to a cable where a copper strand is wound around the main cable. This copper strand serves as the neutral conductor, providing a return path for the current in the system. The winding of the copper strand around the cable helps to maintain a balanced distribution of electrical current and reduces the risk of damage or interference. This design is commonly used in underground distribution systems to ensure safe and efficient power transmission.

The two functions of a feed through are grounding and transformer replacement. Grounding is important to ensure the safety of electrical systems by providing a path for electrical current to flow into the ground in case of a fault. Transformer replacement refers to the process of replacing a faulty or outdated transformer with a new one to ensure efficient power distribution.

When working from a bucket boom, a conductor is considered safe for hand contact because the bucket boom provides insulation and protects the worker from direct contact with the conductor. The worker is elevated and separated from the ground, reducing the risk of electric shock. This method ensures a safe working environment for the worker when handling the conductor.