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Wireman
SUBSTATION AND EQUIPMENT
Set 4
Set 4
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Q14189
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What is the name of device used for protection against lightning in over head line?
A
Air circuit breaker
B
Oil circuit breaker
C
Lightning arrester
D
Isolator
Q14190
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Which is the function of a lightning arrester?
A
Protection from over current
B
Protection from leakage current
C
Protection from lower current
D
Protection from over voltage due to lightning
Q14191
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Which gas is used as insulator in circuit breaker?
A
Nitrogen
B
Oxygen
C
Hydrogen
D
SF6
Q14192
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Which circuit breaker has the lowest voltage range?
A
Air-break circuit breaker
B
Oil circuit breaker
C
Vacuum circuit breaker
D
SF6 circuit breaker
Q14193
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Which is the purpose of circuit breaker?
A
To monitor over voltage
B
Protection and control
C
Protection and monitor heat
D
Monitor under voltage
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