Computer Programming MCQs

5739 MCQs  (Page 203 of 574)

On which of the following effects of electric current a fuse operates ?
A. photoelectric effect
B. electrostatic effect
C. heating effect
D. magnetic effect
A fuse in a motor circuit provides protection against__________?
A. overload
B. short-circuit and overload
C. open circuit, short-circuit and overload
D. none of the above
Oil switches are employed for_____________?
A. low currents circuits
B. low voltages circuits
C. high voltages and large currents circuits
D. all circuits
An isolator is installed_____________?
A. to operate the relay of circuit breaker
B. as a substitute for circuit breaker
C. always independent of the position of circuit breaker
D. generally on both sides of a circuit breaker
H.R.C. fuse, as compared to a rewirable fuse, has_________________?
A. no ageing effect
B. high speed of operation
C. high rupturing capacity
D. all of the above
The fuse blows off by___________?
A. burning
B. arcing
C. melting
D. none of the above
The closed-loop voltage gain of an inverting amplifier equal to______________?
A. The ratio of the input resistance to feedback resistance
B. The open-loop voltage gain
C. The feedback resistance divided by the input resistance
D. The input resistance