Interruption of large currents by relay requires
A) arc suppressing blow out coils
B) wide separation of the opened contacts
C) high speed opening of contacts
D) all of the above
Correct Answer:
Verified
Q4: Protective relays are devices that detect abnormal
Q5: The voltage appearing across the contacts after
Q6: Ionization in circuit breaker is facilitated by
A)high
Q7: In a circuit breaker the basic problem
Q8: Overheating of relay contacts or contact born
Q10: Shunt capacitance is neglected while considering
A)short transmission
Q11: The arc voltage produced in A.C. circuit
Q12: The time of closing the cycle, in
Q13: Insulation resistance of high voltage circuit breakers
Q14: H.R.C. fuses provide best protection against
A)overload
B)reverse current
C)open-circuits
D)short-circuits
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