Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Never work on an energized electrical circuit unless ____.
a. | told to do so by your supervisor | b. | it is not possible to disconnect the
power | c. | you are sure you can safely make the repairs | d. | a and c
only |
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2.
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The most dangerous path for electrical shock through the body is ____.
a. | foot to foot | c. | foot to hand | b. | hand to foot | d. | hand to hand |
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3.
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A current of 2 to 3 milliamperes passing through the body will generally cause
____.
a. | the heart to go into fibrillation | b. | muscular paralysis and breathing
difficulty | c. | a person to seize the line and not be able to let go | d. | a slight tingling
sensation |
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4.
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____ volts is generally the most dangerous to work with because it causes a
current flow of 100 to 200 milliamperes through the body.
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5.
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The mission of the ____ is to ensure safe and healthful workplaces in the United
States.
a. | Department of Labor | c. | Bureau of Workman's Compensation | b. | Department of
Commerce | d. | none of the
above |
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6.
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A current of 20 to 30 milliamperes passing through the body will generally cause
____.
a. | the heart to go into fibrillation | b. | muscular paralysis and breathing
difficulty | c. | a person to seize the line and not be able to let go | d. | a slight tingling
sensation |
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7.
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A current of 100 to 200 milliamperes passing through the body will generally
cause ____.
a. | the heart to go into fibrillation | b. | muscular paralysis and breathing
difficulty | c. | a person to seize the line and not be able to let go | d. | a slight tingling
sensation |
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8.
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When a person puts a lock on a piece of equipment to lock it out, the key is
kept by ____.
a. | the shift supervisor | c. | the person installing the lock | b. | the maintenance
foreman | d. | none of the
above |
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9.
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An electrician's hard hat should be made of ____.
a. | aluminum | c. | steel | b. | plastic | d. | tungsten |
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10.
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A safety harness and lanyard should be worn when working more than ____ feet
above the floor or ground.
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11.
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Electricians should avoid working with ladders made of ____.
a. | wood | c. | aluminum | b. | fiberglass | d. | both b and c |
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12.
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The highest usable step on a stepladder is ____.
a. | the top of the ladder | b. | the top step of the ladder | c. | the second step from
the top of the ladder |
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13.
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A class ____ fire involves common combustible materials such as paper or
wood.
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14.
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A class ____ fire involves grease, combustible liquids, or gases.
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15.
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A class ____ fire involves energized electrical equipment.
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16.
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A class ____ fire involves burning metal.
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17.
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____ are used to prevent people from being shocked.
a. | GFCD's | c. | GFEP's | b. | GFCP's | d. | GFCI's |
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18.
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A GFCI will open the circuit when it detects a current difference of
____.
a. | 5 milliamperes | c. | 5 microamperes | b. | 8 milliamperes | d. | 8 microampere |
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19.
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____ procedures are used to prevent someone from energizing an electrical
circuit by mistake.
a. | Energized circuit | c. | Tag out | b. | Lock out | d. | Both b and c |
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20.
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All electrical lines and equipment should be considered ____ until determined
otherwise.
a. | open | c. | shorted | b. | energized | d. | safe |
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21.
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OSHA part ____ deals mainly with regulations concerning electrical
safety.
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22.
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The person most responsible for your safety on the job site is ____.
a. | you | c. | the company | b. | the foreman | d. | OSHA |
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23.
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Article ____ of the NEC lists the requirements for grounding electrical
systems.
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24.
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What occurs when an intermittent gap between conductors or a conductor and
ground permits current to jump between the two conductive surfaces.
a. | ground-fault | c. | minimum current | b. | arc-fault | d. | intermittent
open |
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25.
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Which type of arc-fault is generally caused by loose connections?
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