Arc in a circuit breaker is interrupted at
A. zero current
B. maximum current
C. minimum voltage
D. maximum voltage
Answer: Option A
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Related Questions on Switchgear Protections
Magnetic circuit breaker has ______ trip action.
A. delayed
B. instantaneous
C. both of the above
D. none of the above
In a circuit breaker the basic problem is to
A. maintain the arc
B. extinguish the arc
C. transmit large power
D. emit the ionizing electrons
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A. copper tungsten alloy
B. porcelain
C. electrolytic copper
D. aluminium alloy
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B. short duty
C. intermittant duty
D. repeated duty
Please give derivation of insulation level question