A zener diode utilizes ______________ characteristics for its operation?
A. forward
B. reverse
C. both forward and reverse
D. none of the above
Semiconductor Diode
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__________________?
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__________________?
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__________________?
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 zener diode has ______________ breakdown voltage?
A zener diode has ______________ breakdown voltage?
A. undefined
B. sharp
C. zero
D. none of the above
A series resistance is connected in the zener circuit to_______________?
A series resistance is connected in the zener circuit to_______________?
A. properly reverse bias the zener
B. protect the zener
C. properly forward bias the zener
D. none of the above
In the breakdown region, a zener didoe behaves like a _______________source?
In the breakdown region, a zener didoe behaves like a _______________source?
A. constant voltage
B. constant current
C. constant resistance
D. none of the above
A zener diode is________________ device?
A zener diode is________________ device?
A. a non-linear
B. a linear
C. an amplifying
D. none of the above
Mains a.c. power is converrted into d.c. power for_________________?
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
The ripple factor of a half-wave rectifier is_________________?
The ripple factor of a half-wave rectifier is_________________?
A. 2
B. 1.21
C. 2.5
D. 0.48