## Multiple Choice Questions and Answers on Solid State Switching Circuits

**Q1. A switch has ………………**

- One state
- Two states
- Three states
- None of the above

**Answer : 2**

**Q2. A relay is ……….. switch**

- A mechanical
- An electronic
- An electromechanical
- None of the above

**Answer : 3**

**Q3. The switch that has the fastest speed of operation is ………….. switch**

- Electronic
- Mechanical
- Electromechanical
- None of the above

**Answer : 1**

**Q4. The most inexpensive switch is ………….. switch**

- Electronic
- Mechanical
- Electromechanical
- None of the above

**Answer : 1**

**Q5. The main disadvantage of a mechanical switch is that it…………. **

- Is operated mechanically
- Is costly
- Has high inertia
- None of the above

**Answer : 3**

**Q6. When a transistor is driven to saturation, ideally the output is ………………**

- V
_{CC} - 0
- V
_{CC}/2 - 2V
_{CC}

**Answer : 2**

**Q7. The maximum speed of electronic switch can be ………….. operations per second**

- 10
^{4} - 10
- 1000
- 10
^{9}

**Answer : 4**

**Q8. A relay is superior to a mechanical switch because it ……………**

- Is relatively inexpensive
- Does not require moving contacts
- Combines control with power amplification
- None of the above

**Answer : 3**

**Q9. When a transistor is driven to cut off, ideally the output is …………..**

- V
_{CC} - 0
- V
_{CC}/2 - V
_{CC}/3

**Answer : 1**

**Q10. ………………. multivibrator is a square wave oscillator**

- Monostable
- Astable
- Bistable
- None of the above

**Answer : 2**

**Q11. An astable multivibrator has ………….**

- One stable state
- Two stable states
- No stable state
- None of the above

**Answer : 3**

**Q12. If d.c. supply of 10 V is fed to a differentiating circuit, then output will be …….**

- 20 V
- 10 V
- 0 V
- None of the above

**Answer : 3**

**Q13. If the input to a differentiating circuit is a saw-tooth wave, then output will be ………….**

- Square
- Triangular
- Sine
- Rectangular

**Answer : 4**

**Q14. A bistable multivibrator has …………..**

- Two stable states
- One stable state
- No stable state
- None of the above

**Answer : 1**

**Q15. If a square wave is fed to a differentiating circuit, the output will be …………**

- Sine wave
- Sharp narrow pulses
- Rectangular wave
- Triangular wave

**Answer : 2**

**Q16. An integrating circuit is a simple RC series circuit with output taken across ………**

- Both R and C
- R
- C
- None of the above

**Answer : 3**

**Q17. For an integrating circuit to be effective , the RC product should be ………. the time period of the input wave**

- 5 times greater than
- 5 times smaller than
- Equal to
- At least 10 times greater than

**Answer : 4**

**Q18. A differentiating circuit is a simple RC circuit with output taken across …………..**

- R
- C
- Both R and C
- None of the above

**Answer : 1**

**Q19. A monostable vibrator has …………..**

- No stable state
- One stable state
- Two stable states
- None of the above

**Answer : 2**

**Q20. The multivibrator which generates square wave of its own is the ………… multivibrator**

- Monostable
- Bistable
- Astable
- None of the above

**Answer : 3**

**Q21. For a differentiating circuit to be effective, the RC product should be ………… the time period of the input wave**

- Equal to
- 5 times greater than
- 5 times smaller than
- At least 10 times greater than

**Answer : 4**

**Q22. When a rectangular voltage waveform is applied to a capacitor, then the current waveform is ……………**

- Rectangular
- Sinusoidal
- Sawtooth
- Square

**Answer : 1**

**Q23. The positive clipper is that which removes the …………………. half-cycles of the input voltage.**

- Negative
- Positive
- Both positive and negative
- None of the above

**Answer : 2**

**Q24. A clamping circuits adds ………………… component to the signal**

- c.
- c.
- both d.c. and a.c.
- none of the above

**Answer : 1**

**Q25. One would find a clamping circuit in ………………..**

- Receiving antenna
- Radio transmitter
- Radio receiver
- Television receiver

**Answer : 4**

**Q26. When a transistor is used as an amplifier, it is operated in the ……………… region**

- Off
- Saturation
- Active
- None of the above

**Answer : 3**

**Q27. When the transistor (CE arrangement) is in the cut off region, the collector current is ……………..**

- I
_{CBO} - I
_{CEO} - (β + 1) I
_{CEO} - IC
_{(sat)}

**Answer : 2**

**Q28. A negative clipper removes the ……………… half-cycles of the input voltage**

- Negative
- Positive
- Both positive and negative
- None of the above

**Answer : 1**

**Q29. If the input to an integrating circuit is a succession of alternating positive and negative pulses of very short duration, the output will be …………… wave**

- Rectangular
- Triangular
- Sine
- Square

**Answer : 4**

**Q30. In a multivibrator, we have ………. feedback.**

- Negative
- 100 % positive
- Both positive and negative
- None of the above

**Answer : 2**