The most widely used rectifier is ________________?

Related Mcqs:

1. 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...

2. 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...

3. 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...

4. ____________ rectifier has the lowest forward resistance?

   A. solid state B. vacuum tube C. gas tube D. none of the above...

5. 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...

6. 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...

7. The maximum efficiency of a half-wave rectifier is _____________?

   A. 40.6 % B. 81.2 % C. 50 % D. 25 %...

8. The ripple factor of a half-wave rectifier is_________________?

   A. 2 B. 1.21 C. 2.5 D. 0.48...

9. 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...

10. A zener diode has ________________?

    A. one pn junction B. two pn junctions C. three pn junctions D. none of the above...