MTA Transit Electrical Craft Helper Exam
4612 Practice Guide 2026
1. To light the 300 W lamp. The following switches must X and Z
be closed?
2. If all of a sudden switches WXY and Z are closed, the The lamp will light and the
following will happen? motor will rotate
3. With one hundred twenty volts applied across the ten 12
ome resistor the current drawn by the resistor is how
many amps?
4. The current drawn by the 300 W lamp When lighted 2.5
should be approximately how many amps?
5. Of the following materials the best conductor of elec- Copper
tricity is
6. Is the sum of 6'6 5'9 and 2'1 1/2 is 14'4 1/2"
7. What is the total length of Electrical conduit that must 64'6"
be run 14'6" 21'3" 6'0 22'9"
8. Of the following electrical devices the one that is not transformer
normally used in direct current electrical circuits is?
9. The number of 120 volt light Bulbs that should nor- 3
mally be connected in series across a 600 volt Electric
line is?
10. Of the following motors the one that does not have Squirrel cage induction
any brushes is
11. The instrument that should be used to accurately ohmmeter
measure the resistance of 4700 ohm resistor is?
, MTA Transit Electrical Craft Helper Exam
4612 Practice Guide 2026
12. To measure the current in an electric circuit, the instru- Ammeter
ment that should be used is?
13. To measure the insulation resistance of a rubber cov- Megger
ered electrical cable the instrument that should be
used is?
14. An AC motor is hooked up to a power distribution Voltmeter
box.In order to check the voltage at the motor termi-
nals the instrument that should be used is?
15. To measure the shaft diameter of a motor accurately Micrometer
to one thousandth of an inch the instrument that
should be used is?
16. The instrument that should be used to determine Frequency meter
whether 25 Hz or 60 Hz is present.An electrical circuit
is?
17. The proper instrument to use to determine the diame- Wire gage
ter of the conductor of a piece of electric hook up wire
is?
18. The amount of electrical power being used in a bal- Wattmeter
anced three phase circuit should be measured with?
19. The electrical way form at a given point in an electrical Oscilloscope
circuit can be observed with?
20. The proper instrument to use for measuring the width 6 foot folding ruler
of a door is?
21. A one inch hole with the tolerance of plus or minus Vernier Caliper
3000ths is reamed in a steel block.The proper instru-
, MTA Transit Electrical Craft Helper Exam
4612 Practice Guide 2026
ment to use to accurately check the diameter of the
hole is?
22. The number of conductors required to connect to a 3
three phase delta connected heater bank to an electric
power panel board is?
23. The Wire size that is most commonly used for #12 A.W.G.
branch.Lighting circuits and homes is?
24. When installing electrical circuits the tool that should Snake
be used to pull wire through a conduit is a?
25. The lowest voltage that a neon teslant can detect is? 80 Volts
26. The best procedure to use when storing tools that are apply a light coating of oil
subject to rusting is to? to the tools
27. If a 3 1/2 in long nails required to nail wood framing 16d
members together the nail size to you should be?
28. Of the four motors the one that can operate only on Induction motor
alternating current is?
29. The sum of 1/3 + 2/6 + 5/6 is? 1 17/30
30. What instrument should be used to measure the state Hydrometer
of charge of a lead acid storage battery?
31. if three 1 1/2 volt dry cell Batteries are wired and se- 4.5 volts
ries.The total voltage provided by the three batteries
is?
32. $475.26
4612 Practice Guide 2026
1. To light the 300 W lamp. The following switches must X and Z
be closed?
2. If all of a sudden switches WXY and Z are closed, the The lamp will light and the
following will happen? motor will rotate
3. With one hundred twenty volts applied across the ten 12
ome resistor the current drawn by the resistor is how
many amps?
4. The current drawn by the 300 W lamp When lighted 2.5
should be approximately how many amps?
5. Of the following materials the best conductor of elec- Copper
tricity is
6. Is the sum of 6'6 5'9 and 2'1 1/2 is 14'4 1/2"
7. What is the total length of Electrical conduit that must 64'6"
be run 14'6" 21'3" 6'0 22'9"
8. Of the following electrical devices the one that is not transformer
normally used in direct current electrical circuits is?
9. The number of 120 volt light Bulbs that should nor- 3
mally be connected in series across a 600 volt Electric
line is?
10. Of the following motors the one that does not have Squirrel cage induction
any brushes is
11. The instrument that should be used to accurately ohmmeter
measure the resistance of 4700 ohm resistor is?
, MTA Transit Electrical Craft Helper Exam
4612 Practice Guide 2026
12. To measure the current in an electric circuit, the instru- Ammeter
ment that should be used is?
13. To measure the insulation resistance of a rubber cov- Megger
ered electrical cable the instrument that should be
used is?
14. An AC motor is hooked up to a power distribution Voltmeter
box.In order to check the voltage at the motor termi-
nals the instrument that should be used is?
15. To measure the shaft diameter of a motor accurately Micrometer
to one thousandth of an inch the instrument that
should be used is?
16. The instrument that should be used to determine Frequency meter
whether 25 Hz or 60 Hz is present.An electrical circuit
is?
17. The proper instrument to use to determine the diame- Wire gage
ter of the conductor of a piece of electric hook up wire
is?
18. The amount of electrical power being used in a bal- Wattmeter
anced three phase circuit should be measured with?
19. The electrical way form at a given point in an electrical Oscilloscope
circuit can be observed with?
20. The proper instrument to use for measuring the width 6 foot folding ruler
of a door is?
21. A one inch hole with the tolerance of plus or minus Vernier Caliper
3000ths is reamed in a steel block.The proper instru-
, MTA Transit Electrical Craft Helper Exam
4612 Practice Guide 2026
ment to use to accurately check the diameter of the
hole is?
22. The number of conductors required to connect to a 3
three phase delta connected heater bank to an electric
power panel board is?
23. The Wire size that is most commonly used for #12 A.W.G.
branch.Lighting circuits and homes is?
24. When installing electrical circuits the tool that should Snake
be used to pull wire through a conduit is a?
25. The lowest voltage that a neon teslant can detect is? 80 Volts
26. The best procedure to use when storing tools that are apply a light coating of oil
subject to rusting is to? to the tools
27. If a 3 1/2 in long nails required to nail wood framing 16d
members together the nail size to you should be?
28. Of the four motors the one that can operate only on Induction motor
alternating current is?
29. The sum of 1/3 + 2/6 + 5/6 is? 1 17/30
30. What instrument should be used to measure the state Hydrometer
of charge of a lead acid storage battery?
31. if three 1 1/2 volt dry cell Batteries are wired and se- 4.5 volts
ries.The total voltage provided by the three batteries
is?
32. $475.26
