A Best Way To Crack Gorenment Job Exams

ECE Objective Questions { Diode Circuits }



15. Which of the following device is bidirectional but without a gate?
A. SCR
B. Triac
C. Diac
D. None of the above

16. Which of the following device has an emitter and two connections to the base, without a collector terminal?
A. UJT
B. Diac
C. Triac
D. SCR

17. A UJT is not used as a
A. transistor amplifier
B. switching device
C. timing device
D. all of the above

18. Which of the following device has negative resistance?
A. Gas diode
B. Vacuum diode
C. Tunnel diode
D. None of the above

19. A tunnel diode is used for
A. very low frequencies
B. 50 Hz
C. HF
D. microwave frequencies

20. Which of the following uses two junction of opposite polarities?
A. Tunnel diode
B. Zener diode
C. Varactor diode (d) None of the above
D.

21. In a power supply a shorted input capacitor is likely to result in
A. excessive hum
B. reduced voltage output
C. no voltage output
D. none of the above

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