A half-wave rectifier has an input voltage of 240 V r.m.s. If the step-down transformer has a turns ratio of 8:1, what is the peak load voltage? Ignore diode drop?
(A) 27.5 V
(B) 86.5 V
(C) 30 V
(D) 42.5 V
_____________ filter circuit results in the best voltage regulation?
(A) choke input
(B) capacitor input
(C) resistance input
(D) none of the above
The output impedance of a transistor connected in_____________arrangement is the highest?
(A) common emitter
(B) common collector
(C) common base
(D) none of the above
A 1,000 V power supply would use_____________ as a filter capacitor?
(A) paper capacitor
(B) air capacitor
(C) mica capacitor
(D) electrolytic capacitor
A zener diode utilizes ______________ characteristics for its operation?
(A) forward
(B) reverse
(C) both forward and reverse
(D) none of the above
If the a.c. input to a half-wave rectifier is an r.m.s value of 400/√2 volts, then diode PIV rating is__________________?
(A) 400/√2 V
(B) 400 V
(C) 400 x √2 V
(D) none of the above
There is a need of transformer for__________________?
(A) half-wave rectifier
(B) centre-tap full-wave rectifier
(C) bridge full-wave rectifier
(D) none of the above
The disadvantage of a half-wave rectifier is that the__________________?
(A) components are expensive
(B) diodes must have a higher power rating
(C) output is difficult to filter
(D) none of the above