A. one-half
B. the same as
C. twice
D. four times
Related Mcqs:
- 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 - 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 - 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 - If the arrow of crystal diode symbol is positive w.r.t. bar, then diode is _____________biased?
A. forward
B. reverse
C. either forward or reverse
D. none of the above - 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 - The doping level in a zener diode is______________ that of a crystal diode?
A. the same as
B. less than
C. more than
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 leakage current in a crystal diode is due to _________________?
A. minority carriers
B. majority carriers
C. junction capacitance
D. none of the above - The ratio of reverse resistance and forward resistance of a germanium crystal diode is about ______________?
A. 1 : 1
B. 100 : 1
C. 1000 : 1
D. 40,000 : 1
