Page 1 of 17
GAS TECHNICIAN 2 EXAM QUESTIONS AND HIGHLIGHTED
ANSWERS- GRADED A+ GAS SYSTEMS, SAFETY, CODES &
CERTIFICATION REVIEW.
1. As the length of a conductor increases, the voltage drop along the conductor:
a) Increases
b) Decreases.
c) Remains the same
d) Should be as flexiole as possible
a) Increases
3. When a new appliance is to be installed in a typical residential basement and the supply wiring
to it is to be concealed, which of the tollowing types of wire is acceptable, and most cost effective:
a) NMW
B) NMD
c) BX
d) LVT
B) NMD
4,When checking a circuit of unknown voltage using an analog meter with 0-30V. 0-125V. 0-
250V. and 0-600V, which scale should be selected?
a) 0-30 volts
b) 0-125 volts
c) 0-250 volts
d) 0-600 volts
d) 0-600 volts
5. A 120 voll power supply for a residential electrical circuit is taken ter the:
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a) Line side of one branch circuil breaker and a ground lug,
b) Load side of one main circuit breaker and the line side of a second breaker,
c) Load side of one main breaker and the load side of the second moin breaker,
d) Load side of one branch circuit breaker and a neutral lug.
d) Load side of one branch circuit breaker and a neutral lug.
6. A receptacle mounted ground fault circuit interupter protects against:
a) Appliance overloading.
b) Deod shorts.
c) Short circuits,
d) Current flow to ground.
d) Current flow to ground
7. An electrical pictorial diagram is used to
a) Show component location.
b) Indicole how the system works,
c) Indicate port numbers of the devices,
d) Determine wing sizes for the appliance.
a) Show component location
8. Fuses serving motor circuits should be:
a) Quick blow type
b) Time delay type
c) Oversized by 2.5%
d) Oversized by 3.5%
) b Time delay type.
As the length of on elecincal run increases, it may be necessary to;
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a) increase the wire size,
b) Use a dilerent moe o, conducer
c)Decreose the use size
d) increase the fuse size
a) Increase the wire size
6. Millivolt wiring should be isolated from line voliage wiring because:
a) The line voltage wire will overheat the low voltage wiring.
b) The resistance of the millivolt wiring will be increased.
c)The current in the low voltage wire will be reduced to that of the millivolt wire,
d) The line vollage will induce a volioge into the millivolt wiring
d) The line vollage will induce a volioge into the millivolt wiring
7. Which tool is used to determine if the windings on on electric motor have shorted?
a) Voltmeter
b) Ammeter
c) Ohmmeter
d) Wattmeter
c) Ohmmeter
8. On on electrical schematic diagram, the safety controls are typically drawn;
a) To the right of the loads.
b) Above Ihe loads
c)Below the loads
d) To the left of the loads
d) To the left of the loads
9. Which of the following types of wire must be used in damp locations?
GAS TECHNICIAN 2 EXAM QUESTIONS AND HIGHLIGHTED
ANSWERS- GRADED A+ GAS SYSTEMS, SAFETY, CODES &
CERTIFICATION REVIEW.
1. As the length of a conductor increases, the voltage drop along the conductor:
a) Increases
b) Decreases.
c) Remains the same
d) Should be as flexiole as possible
a) Increases
3. When a new appliance is to be installed in a typical residential basement and the supply wiring
to it is to be concealed, which of the tollowing types of wire is acceptable, and most cost effective:
a) NMW
B) NMD
c) BX
d) LVT
B) NMD
4,When checking a circuit of unknown voltage using an analog meter with 0-30V. 0-125V. 0-
250V. and 0-600V, which scale should be selected?
a) 0-30 volts
b) 0-125 volts
c) 0-250 volts
d) 0-600 volts
d) 0-600 volts
5. A 120 voll power supply for a residential electrical circuit is taken ter the:
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a) Line side of one branch circuil breaker and a ground lug,
b) Load side of one main circuit breaker and the line side of a second breaker,
c) Load side of one main breaker and the load side of the second moin breaker,
d) Load side of one branch circuit breaker and a neutral lug.
d) Load side of one branch circuit breaker and a neutral lug.
6. A receptacle mounted ground fault circuit interupter protects against:
a) Appliance overloading.
b) Deod shorts.
c) Short circuits,
d) Current flow to ground.
d) Current flow to ground
7. An electrical pictorial diagram is used to
a) Show component location.
b) Indicole how the system works,
c) Indicate port numbers of the devices,
d) Determine wing sizes for the appliance.
a) Show component location
8. Fuses serving motor circuits should be:
a) Quick blow type
b) Time delay type
c) Oversized by 2.5%
d) Oversized by 3.5%
) b Time delay type.
As the length of on elecincal run increases, it may be necessary to;
, Page 3 of 17
a) increase the wire size,
b) Use a dilerent moe o, conducer
c)Decreose the use size
d) increase the fuse size
a) Increase the wire size
6. Millivolt wiring should be isolated from line voliage wiring because:
a) The line voltage wire will overheat the low voltage wiring.
b) The resistance of the millivolt wiring will be increased.
c)The current in the low voltage wire will be reduced to that of the millivolt wire,
d) The line vollage will induce a volioge into the millivolt wiring
d) The line vollage will induce a volioge into the millivolt wiring
7. Which tool is used to determine if the windings on on electric motor have shorted?
a) Voltmeter
b) Ammeter
c) Ohmmeter
d) Wattmeter
c) Ohmmeter
8. On on electrical schematic diagram, the safety controls are typically drawn;
a) To the right of the loads.
b) Above Ihe loads
c)Below the loads
d) To the left of the loads
d) To the left of the loads
9. Which of the following types of wire must be used in damp locations?
