Multiple Choice
Relays can be designed to respond to changes in
A) resistance, reactance or impedance
B) voltage and current
C) light intensity
D) all above
Correct Answer:
Verified
Correct Answer:
Verified
Q14: On which of the following routine tests
Q15: Overload relays are of…… type.<br>A)induction<br>B)solid state<br>C)thermal<br>D)all above
Q16: Which of the following medium is employed
Q17: With which of the following, a circuit
Q18: A thermal protection switch can protect against<br>A)short-circuit<br>B)temperature<br>C)overload<br>D)over
Q20: The relay operating speed depends upon<br>A)the spring
Q21: D.C. shunt relays are made of<br>A)few turns
Q22: Directional relays are based on flow of<br>A)power<br>B)current<br>C)voltage
Q23: The main function of a fuse is
Q24: Circuit breakers are essentially<br>A)current carrying contacts called