The maximum efficiency of a half-wave rectifier is _____________?
A. 40.6 %
B. 81.2 %
C. 50 %
D. 25 %
Semiconductor Diode
For the same secondary voltage, the output voltage from a centre-tap rectifier is___________ than that of bridge rectifier?
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
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 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?
_____________ filter circuit results in the best voltage regulation?
A. choke input
B. capacitor input
C. resistance input
D. none of the above
A 1,000 V power supply would use_____________ as a filter 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
If the PIV rating of a diode is exceeded,_______________?
If the PIV rating of a diode is exceeded,_______________?
A. the diode conducts poorly
B. the diode is destroyed
C. the diode behaves like a zener diode
D. none of the above
The most widely used rectifier is ________________?
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 PIV rating of each diode in a bridge rectifier is ___________that of the equivalent center-tap rectifier?
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
A 10 V power supply would use ____________ as filter capacitor?
A 10 V power supply would use ____________ as filter capacitor?
A. paper capacitor
B. mica capacitor
C. electrolytic capacitor
D. air capacitor
____________ rectifier has the lowest forward resistance?
____________ rectifier has the lowest forward resistance?
A. solid state
B. vacuum tube
C. gas tube
D. none of the above