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Q. |
jCorona usually occurs when the electrostatic stress in air around the conductor exceeds |
A. | 6.6 kV (r.m.s. value)/cm |
B. | 11 kV (r.m.s. value)/cm |
C. | 22 kV (maximum value)/cm |
D. | 30 kV (maximum v^lue)/cm |
Answer» D. 30 kV (maximum v^lue)/cm |
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