Protective relays are devices that detect abnormal conditions in electrical circuits by measuring
A) current during abnormal condition
B) voltage during abnormal condition
C) constantly the electrical quantities which differ during normal and abnormal conditions
D) none of the above
Correct Answer:
Verified
Q1: A transmission line is protected by
A)inrush protection
B)distance
Q2: Large internal faults are protected by
A)merz price
Q3: When a transmission line is energized, the
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
Q9: Interruption of large currents by relay requires
A)arc
Q10: Shunt capacitance is neglected while considering
A)short transmission
Q11: The arc voltage produced in A.C. circuit
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