Q
jCorona usually occurs when the electrostatic stress in air around the conductor exceeds?
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A
A. 6.6 kv (r.m.s. value)/cm
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B
B. 11 kv (r.m.s. value)/cm
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C
C. 22 kv (maximum value)/cm
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D
D. 30 kv (maximum value)/cm
Correct Answer:
D. D. 30 kv (maximum value)/cm