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.Management Sciences
Category: Semiconductor Diode
A zener diode is used as ______________?
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A. an amplifier
B. a voltage regulator
C. a rectifier
D. a multivibrator
A zener diode has ________________?
A. one pn junction
B. two pn junctions
C. three pn junctions
D. none of the above
The PIV rating of a crystal diode is _______________ that of equivalent vacuum diode
A. the same as
B. lower than
C. more than
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
The leakage current in a crystal diode is due to _________________?
A. minority carriers
B. majority carriers
C. junction capacitance
D. none of the above
The forward voltage drop across a silicon diode is about _______________?
A. 2.5 V
B. 3 V
C. 10 V
D. 0.7 V
The knee voltage of a crystal diode is approximately equal to ________________?
A. applied voltage
B. breakdown voltage
C. forward voltage
D. barrier potential
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
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
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