Electrical Hazards Quiz

QUIZ

      1. The following is not a good conductor:

a.       Copper

b.      Aluminum

c.       Gum rubber

d.      Water

2.      Contact with electricity can cause:

a.       Death

b.      Burns

c.       Muscle contractions

d.      All of the above

3.      Before attempting to extinguish an electrical fire, it is best to:

a.       Notify MSHA

b.      Cut the power

c.       Use water hoses

d.      Find a good class A extinguisher

4.      Electrocution can occur with currents as small as

a.       5mA

b.      75mA

c.       1  Amp

d.      10 Amps

5.      110 volts is less deadly than 480 volts

a.       True

b.      False

6.      One of the biggest hazards of working with car batteries is:

a.       Electrocution

b.      Chemical burns

c.       Explosion

d.      Both b and c

7.      Which would have the lowest resistance:

a.       A large diameter copper wire

b.      A small diameter copper wire

c.       A small diameter aluminum wire

d.      A pencil lead

8.      The ground prong on a drop cord is designed to:

a.       Save people

b.      Reduce resistance

c.       Improve voltage

d.      Increase amperage

9.      Electrical lockouts must be made by:

a.       Each person working on the machine

b.      Foremen only

c.       Electricians only

d.      Locksmiths

10.  Welding machines cannot cause electrocution

a.       True

b.      False

11.  Never grab a cable:

a.       If it is smoking

b.      At a splice

c.       Where insulation is damaged

d.      All of the above

12.  Current overload protection is provided by:

a.       Fuses

b.      Transformers

c.       Circuit breakers

d.      Both a and c

13.  If you forget to lock out a machine before working on it:

a.       It is okay as long as your partner did

b.      You may die

c.       You may not go home with all your body parts

d.      Both b and c

14.  If a crane comes in contact with high voltage powerlines, you should:

a.       Jump off the crane only if the crane catches fire and shuffle away.

b.      If near the crane, remain where you are without moving until the power is cut

c.       Run away

d.      Lower the crane boom if you are already on the crane

15.  Driving over drop cords is okay if you:

a.       bridge the cord

b.      cut the power

c.       have bias-ply tires

d.      bury the cord

16.  When pulling disconnect switches, you should:

a.       Wear rubber boots

b.      Stand on steel plates

c.       Stand to the side of the switch

d.      Use hot line tools

17.  The larger the rating (number) of the fuse, the more current it can handle.

a.       True

b.      False

18.  Transformer enclosures must be:

a.       At least 6 feet high

b.      Below ground level

c.       Locked

d.      Painted grey

19.  Except for battery-operated equipment, all metal enclosing electrical circuits must be:

a.       Copper

b.      Grounded

c.       Labeled

d.      Guarded

20.  Larger motors need larger wires because:

a.       They need more current

b.      They need more voltage

c.       They have lower resistance

d.      They have smaller conductors

21.  Truck tires are good insulators

a.       True

b.      False

22.  Lightning will not strike rubber-tired equipment

a.       true

b.      false

23.  Which should you avoid during an electrical storm?

a.       Plumbing fixtures

b.      Standing near windows

c.       Trees or fences

d.      Standing near heavy equipment

e.       All of the above

24.  Power switches must be labeled unless obvious by location. T__, F__

25.  Electrical lights that by their location present a shock or burn hazard have to be guarded. T__, F__

26.   Cover plates be removed from electrical equipment: a) when testing them, b) when repairing them, c) whenever the lights are on.

27.  If you found the grounding plug had been broken off of an electric drill, what should you do?

a.       Leave it alone

b.      Tag it out

c.       Use it only with a GFCI

d.      Wear linesman’s gloves when using it

28.  You cannot be electrocuted if you use a GFCI.

a.       True

b.      False

29.  All electrically powered equipment must have:

a.       An on-off switch

b.      A UL rating

c.       A frame ground

d.      Labels

30.  Electric arc welding in the rain is okay if:

a.       Low settings are used

b.      Wearing appropriate PPE

c.       You are a certified welder

d.      Never, unless you have a death wish

31.  A missing knock-out plug on a live electrical box results in:

a.       A non-S&S citation

b.      An S&S citation

c.       Nothing

d.      Better air circulation

Electrical Hazards Quiz - Answers

      1. The following is not a good conductor:

c.    Gum rubber

2.      Contact with electricity can cause:

d.    All of the above

3.      Before attempting to extinguish an electrical fire, it is best to:

b.    Cut the power

4.      Electrocution can occur with currents as small as

e.       75mA

5.      110 volts is less deadly than 480 volts

f.       True

6.      One of the biggest hazards of working with car batteries is:

d.    Both b and c

7.      Which would have the lowest resistance:

g.       A large diameter copper wire

8.      The ground prong on a drop cord is designed to:

h.      Save people

9.      Electrical lockouts must be made by:

c.   Electricians only

10.  Welding machines cannot cause electrocution

b.   False

11.  Never grab a cable:

d.    All of the above

12.  Current overload protection is provided by:

d.   Both a and c

13.  If you forget to lock out a machine before working on it:

d.   Both b and c

14.  If a crane comes in contact with high voltage powerlines, you should:

i.        Jump off the crane only if the crane catches fire and shuffle away.

j.        If near the crane, remain where you are without moving until the power is cut

k.      Lower the crane boom if you are already on the crane

15.  Driving over drop cords is okay if you:

l.        bridge the cord

d.   bury the cord

16.  When pulling disconnect switches, you should:

m.    Wear rubber boots

c.    Stand to the side of the switch

17.  The larger the rating (number) of the fuse, the more current it can handle.

n.      True

18.  Transformer enclosures must be:

c.    Locked

19.  Except for battery-operated equipment, all metal enclosing electrical circuits must be:

b.    Grounded

20.  Larger motors need larger wires because:

o.      They need more current

21.  Truck tires are good insulators

b.   False

22.  Lightning will not strike rubber-tired equipment

b.   false

23.  Which should you avoid during an electrical storm?

e.   All of the above

24.  Power switches must be labeled unless obvious by location. T__, F__

25.  Electrical lights that by their location present a shock or burn hazard have to be guarded. T__, F__

26.   Cover plates be removed from electrical equipment: a) when testing them, b) when repairing them, c) whenever the lights are on.

27.  If you found the grounding plug had been broken off of an electric drill, what should you do?

b.   Tag it out

28.  You cannot be electrocuted if you use a GFCI.

b.   False

29.  All electrically powered equipment must have:

p.      An on-off switch

30.  Electric arc welding in the rain is okay if:

d.   Never, unless you have a death wish

31.  A missing knock-out plug on a live electrical box results in:

b.   An S&S citation