Prime Power Test Technician Level 2 Practice Exam 1 Of 3 (Safety)

Zero energy state refers to:

• A power source that is locked out for servicing

• A power source that is locked out and tagged for servicing

• The release of all stored energy in a power source.

• The release of all locks and tags so that energy can be restored.

• Pertains to electric equipment only

A circuit may be tested to determine it is de-energized by use of :

• Ammeter

• Ground stick

• Appropriate voltage detector

• Ohhmeter

• Insulation resistance tester

Lead Acid storage batteries DO NOT include the following hazard:

• Explosive gas

• Electrical flash

• Eye contamination

• Skin burns

• High voltage arcing

What respirator is used when there is insufficient oxygen in a confined space or area, and where the concentration of airborne substances in immediately dangerous to life and health?

• Air purifying

• Filtering

• Air supplying

• None of the above

• All of the above

When untied portable ladders are used to access an upper landing surface, the top of the ladder SHALL extend:

• Just beneath the landing

• At least 1 1/2 feet above the landing

• At least 3 feet above the landing

• No more than 3 steps above the landing

• No more than 25% above the landing

When using a straight ladder, it is unsafe to climb higher than:

• The second rung from the top

• The third rung from the top

• 75% of the total length

• The top rung

• Above the tie-off point

The top step of a tied-off ladder shall

• Provide a 7 inch tread depth

• Have a non-slip surface

• Be kept free of foreign objects

• Not be used as a step

• All of the above

Class B fires may be extinguished by

• Foam, carbon dioxide, and dry chemical fire extinguishers

• Nearest water source

• Smothering with plastic, rags, and heavy cloth

• Class A fire extinguishers

OSHA requires that  __________________ be trained in the purpose and use of lock out / tag out procedures.

• All contracted employees

• All affected employees

• All management and supervisory personnel

• Electrical workers

Air purifying respirators are used:

• Whenever there is not enough oxygen

• With self contained breathing apparatus and supplied air sources

• To screen out dangerous and offending materials

• To ensure that all dangerous substances have been removed from the atmosphere

• In evacuated oil circuit breaker tanks

Electrical fires are class:

• A

• B

• C

• D

• E

Upon the outbreak of a fire, your first action should be to:

• Alert or alarm

• Leave the area or building

• Extinguish the fire

• Determine correct fire extinguisher class

• Remove combustible material from the area

Extension cords and drop lights must be inspected:

• On each shift prior to use

• Within one week of use

• Within one month of use

• Semi-annually

• Annually

Manual lifting is best perfomed by the use of:

• Arms

• Legs

• Back

• Entire body

The best definition of a Confined Space is:

• Any space where dangerous gasses can develop and oxygen might be deficient

• Any small space with regard to human size or that was previously sealed without ventilation

• Any non-ventilated space

• Any space having limited openings for entry and exit, unfavorable ventilation, or not designated for continuous occupancy

• A and B

Which of the following would not be a confined space:

• A ship compartment

• A silo

• A vat

• A ventilated room

• A vent

Which of the follwing should be acheived with adequate ventilation:

• An oxygen level of at least 19.5%

• Keep toxic gas and vapors withing acceptable limits

• Maintain oxygen levels under 23.5%

• None of the above

• A,B,and C

How many people must serve as an attendant outside a confined space?

• 1

• 2

• 3

• 0

Confined space regulations are enforced by:

• OSHA

• NIOSH

• EPA

• NFPA

When performing atmoshpheric tests on a confined space:

• Test oxygen level first

• Test for combustible gasses first

• Test for toxic vapors first

• Test order is not important

A confined space entry permit must be signed by:

• Authorized entrant

• Authorized attendant

• Trained individual acting as entry supervisor

• Certified safety officer

The acronym LEL means:

• Low flouride level

• Lower explosive limit

• Less explosive liquid

• A measurement of toxic gas or vapor

• Leal eats lasagna

• None of the above

An oxygen Enriched atmoshphere:

• Must be acheived before entry into a confined space

• Is developed to dilute toxic gasses or vapors

• Contains less than 19.5% oxygen level

• Is unsafe

What is the purpose of continuous forced air ventilation?

• Eliminates the need for atmospheric tests

• Eliminates the need for an attendant

• Eliminates the need for a permit

• Reclassifies a confined space to a non confined space

• None of the above

Class 2 gloves have a maximum use voltage of __________?

• 1,000 VAC

• 10,000 VAC

• 17,000 VAC

• 30,000 VAC

• 35,000 VAC

How often must insulated blankets be electrically tested?

• Every six months

• Prior to each use

• Every 12 months

• Every 18 months

• Every 24 months

The maximum intended AC voltage use of  insulating blankets is identified by its _________ designation.

• Type

• Class

• Style

• Thickness

Class 0 gloves with an AC proof test rating of 5000 volts has a maximum use voltage of:

• 5000V

• 1000V

• 2500V

• 4500V

Voltage detectors must:

• Provide visual indication

• Provide measurement of any voltage present

• Be rated for the system and voltage being tested

• Include an insulated handle

• All of the above

Insulated gloves that have been issued for service must be electrically tested:

• Before each use

• Every 6 months

• Every 12 months

• Daily

• Every 3 months

When using a voltage detector to assure medium voltage electrical equipment is de-energized, the operator must:

• Determine the detector has been tested within the past 6 months

• Check operation of the detector against a known energized source before each use

• Never allow the voltage detector to come into contact with the electrical equipment under test

• Check operation of the detector against a known energized source after each use

• Check operation of a detector against an known energy source before and after each use

In addition to electrical testing, rubber gloves should be inspected and field tested:

• Before each use

• Daily

• Weekly

• Monthly

Hard hats suitable for the performance of low voltage electrical work, but NOT for higher voltage electrical work, are identified as being:

• Class A

• Class B

• Class C

• Class A and B

• All of the above

The safety goggles or glasses suitable for electrical work use should:

• Be non-conductive

• Be polarized

• Be hard plastic

• Block all bright light

• Be non-transparent

All approved voltage detectors:

• Require contact with conductor being tested

• Indicate voltage level

• Meet measurement accuracy standards

• Provide visual indication

• None of the above

Assurance of proper and safe de-energization, lock out/ tag out, testing for presence of voltage, and grounding is the ultimate responsiblity of:

• The switchman

• The test crew leader

• The engineer in charge

• Yourself

• Your company

The purpose of spare keys for power equipment interlocks is:

• To facilitate switching operations during maintenance

• To facilitate fuse and tap changing operations

• To create less visual or temporary tie conditions in order to avoid an interruption of service

• To replace the in service key if it becomes broken or lost

• All of the above

The procedure to assure equipment is isolated from any available energy source is:

• Confined space entry

• Plant switching orders

• OSHA lock out/ tag out

• NEC article 250 compliance

• None of thea above

Temporary safety grounds:

• Shall not be located near the worker

• Must be 2/0 size conductor

• Are sized with consideration of available short circuit current and time duration

• Must include heavy duty screw clamp or spring tension type connection

• All of the above

Under what considerations can tag out without lock out be permitted?

• If all members of maintenance team agree and sign tag

• If an energy isolating device is not capable of being locked out

• If the employer demonstrates that the tag out program will provide the same level of safety as that provided by a lock

• B and C

• None of the above

The lock and tag that has been applied to an energy isolating device should be removed by:

• The person that applied them

• A supervisor or foreman

• An authorized owner representative

• A member of the maintenance or repair crew

• The last repair crew or group to complete their assignment and report clear

Temporary protective grounds should be placed to create an equipotential zone in the work area:

• At the work location preferably

• On the incoming lines

• Near each energy source

• If concern for unexpected re-energization exists

• Before any testing is performed

When using a "hook stick" to open an energized switch that does not include a stored energy system, one must:

• Operate the switch cautiously

• Position oneself well off to the side

• Jerk the switch to free the contacts and then pull it open carefully

• Open the switch quickly

• Open it slowly to detect excess arcing

The accuracy rating of a specific analog ammeter is +/- 1% of full scale. A measurement is taken at 25% of full scale. The accuracy of this measurement is +/-

• 1%

• .25%

• 4%

• 25%

• 2.5%

Why is it necessary to record all test readings?

• To document the test was performed

• To allow evaluation of the measurement

• To provide a basis for future comparisons

• All of the above

• None of the above

Upon taking an insulation resistance reading, the test person should:

• Record the reading as shown on the meter scale

• Apply the scale multiplier, then record

• Record the multiplier

• Record scale reading and multiplier

• B or D as applicable

During performance of cable DC overpotential testing, the test technician notices an occasional downward dip in current level while the test voltage is at its maximum magnitude. The test technician should:

• Record the average magnitude of dips

• Record the lowest current dips read

• Investigate the test set supply voltage

• Record the reange of current dips experienced

• 80

• 86.7

• 100

• 120