Mains a.c. power is converrted into d.c. power for_________________?

A. lighting purposes
B. heaters
C. using in electronic equipment
D. none of the above

A 10 V power supply would use ____________ as filter capacitor?
A. paper capacitor B. mica capacitor C. electrolytic capacitor D. air capacitor...
A 1,000 V power supply would use_____________ as a filter capacitor?
A. paper capacitor B. air capacitor C. mica capacitor D. electrolytic capacitor...
The leakage current in a crystal diode is due to _________________?
A. minority carriers B. majority carriers C. junction capacitance D. none of the above...
A crystal diode has______________?
A. one pn junction B. two pn junctions C. three pn junctions D. none of the above...
A crystal diode has forward resistance of the order of ________________?
A. kΩ B. Ω C. MΩ D. none of the above...
The ratio of reverse resistance and forward resistance of a germanium crystal diode is about ______________?
A. 1 : 1 B. 100 : 1 C. 1000 : 1 D. 40,000 : 1...
A zener diode has ________________?
A. one pn junction B. two pn junctions C. three pn junctions D. none of the above...
A zener diode is always_______________ connected?
A. reverse B. forward C. either reverse or forward D. none of the above...
The most widely used rectifier is ________________?
A. half-wave rectifier B. centre-tap full-wave rectifier C. bridge full-wave rectifier D. none of the above...
The maximum efficiency of a half-wave rectifier is _____________?
A. 40.6 % B. 81.2 % C. 50 % D. 25 %...