Multiple Choice
In a biased differential relay the bias is defined as a ratio of
A) Number of turns of restraining and operating coil
B) Operating coil current and restraining coil current
C) Fault current and operating coil current
D) Fault current and restraining coil current
Correct Answer:
Verified
Correct Answer:
Verified
Q2: A reactance relay is<br>A)Voltage restrained overcurrent relay<br>B)Voltage
Q3: Reactance relays are used for phase fault
Q4: Impedance relay may use<br>A)Balance beam structure<br>B)Induction cup
Q5: A differential relay response to<br>A)Algebraic difference of
Q6: In an inverse definite minimum time, electromagnetic
Q7: Both voltage and current signals are required
Q8: The domains of power system where directional
Q9: Reactance relay is normally used for protection
Q10: The structure used in reactance relay is<br>A)Induction
Q11: Threshold characteristics of a plain impedance relay