A. 2
B. 1.21
C. 2.5
D. 0.48
Related Mcqs:
- 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 - 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 - The maximum efficiency of a half-wave rectifier is _____________?
A. 40.6 %
B. 81.2 %
C. 50 %
D. 25 % - 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 - The PIV rating of each diode in a bridge rectifier is ___________that of the equivalent center-tap rectifier?
A. one-half
B. the same as
C. twice
D. four times - For the same secondary voltage, the output voltage from a centre-tap rectifier is___________ than that of bridge rectifier?
A. twice
B. thrice
C. four time
D. one-half - When a crystal diode is used as a rectifier, the most important consideration is ____________?
A. forward characteristic
B. doping level
C. reverse characteristic
D. PIC rating - ____________ rectifier has the lowest forward resistance?
A. solid state
B. vacuum tube
C. gas tube
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 - If the doping level in a crystal diode is increased, the width of depletion layer_____________?
A. remains the same
B. is decreased
C. in increased
D. none of the above
