The arc voltage produced in A.C. circuit breaker is always
A) in phase with the arc current
B) lagging the arc current by 90?
C) leading the arc current by 90°
D) none of the above
Correct Answer:
Verified
Q4: Ionization in circuit breaker is facilitated by
A)high
Q5: In a circuit breaker the basic problem
Q6: Overheating of relay contacts or contact born
Q7: Interruption of large currents by relay requires
A)arc
Q8: Shunt capacitance is neglected while considering
A)short transmission
Q10: The time of closing the cycle, in
Q11: Insulation resistance of high voltage circuit breakers
Q12: H.R.C. fuses provide best protection against
A)overload
B)reverse current
C)open-circuits
D)short-circuits
Q13: The ground wire should not be smaller
Q14: The delay fuses are used for the
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