Computer Programming MCQs

5739 MCQs  (Page 542 of 574)

Which of the following bus-bar schemes has the lowest cost?
A. ring bus-bar scheme
B. single bus-bar scheme
C. breaker and a half scheme
D. main and transfer scheme
Which of the following distribution systems is more reliable?
A. radial system
B. tree system
C. ring main system
D. all are equally reliable
In a given transformer for a given applied voltage, losses which remain constant irrespective of load changes are__________?
A. Hysteresis and eddy current losses
B. Friction and windage losses
C. Copper losses
D. None of the above
Which of the following relays is used on long transmission lines?
A. impedance relay
B. mho’s relay
C. reactance relay
D. none of the above
The steel used in steel cored conductors is usually__________?
A. alloy steel
B. stainless steel
C. mild steel
D. high speed steel