Electricity Single Stage Transistor MCQ
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Attempt Free Electricity Single Stage Transistor MCQ Here. Read The Important Electricity MCQ From Below.
- Two transistors
- One transistor
- Three transistor
- None of the above
Answer : 2
Q2. The phase difference between the output and input voltages of a CE amplifier is ………………..
- 180o
- 0o
- 90o
- 270o
Answer : 1
Q3. It is generally desired that a transistor should have …………….. input impedance
- Low
- Very low
- High
- Very high
Answer : 3
Q4. When an a.c. signal is applied to an amplifier, ,the operating point moves along …………….
- c. load line
- c. load line
- both d.c. and a.c. load lines
- none of the above
Answer : 2
Q5. If the collector supply is 10V, then collector cut off voltage under d.c. conditions is ………….
- 20 V
- 5 V
- 2 V
- 10 V
Answer : 4
Electricity Single Stage Transistor MCQ
Q6. In the zero signal conditions, a transistor sees ……………….. load
- a.c.
- d.c.
- both d.c. and a.c.
- none of the above
Answer : 1
Q7. The input capacitor in an amplifier is the ……………….. capacitor
- Coupling
- Bypass
- Leakage
- None of the above
Answer : 1
Q8. The point of intersection of d.c. and a.c. load lines is called ……………..
- Saturation point
- Cut off point
- Operating point
- None of the above
Answer : 3
Q9. The slope of a.c. load line is ……………… that of d.c. load line
- The same as
- More than
- Less than
- None of the above
Answer : 2
Q10. If a transistor amplifier draws 2mA when input voltage is 10 V, then its input impedance is ………..
- 20 kΩ
- 2 kΩ
- 10 kΩ
- 5 kΩ
Answer : 4
Electricity Single Stage Transistor MCQ
Q11. When a transistor amplifier is operating, the current in any branch is ……………
- Sum of a.c. and d.c.
- ac. only
- dc. only
- difference of a.c. and d.c.
Answer : 1
Q12. The purpose of capacitors in a transistor amplifier is to ………………
- Protect the transistor
- Cool the transistor
- Couple or bypass a.c. component
- Provide biasing
Answer : 3
Q13. In the d.c. equivalent circuit of a transistor amplifier, the capacitors are considered ……………..
- Short
- Open
- Partially short
- None of the above
Answer : 2
Q14. In a CE amplifier, voltage gain = ……………. x RAC/Rin
- α
- (1 + α)
- (1+ β)
- β
Answer : 4
Q15. In practice, the voltage gain of an amplifier is expressed ……………..
- As volts
- As a number
- In db
- None of the above
Answer : 3
Q16. If the power and current gains of a transistor amplifier are 16500 and 100 respectively, then voltage gain is ………
- 165
- 165 x 104
- 100
- None of the above
Answer : 1
Q17. If RC and RL represent the collector resistance and load resistance respectively in a single stage transistor amplifier, then a.c. load is ……..
- RL + RC
- RC || RL
- RL – RC
- RC
Answer : 2
Electricity Single Stage Transistor MCQ
Q18. In a CE amplifier, the phase difference between voltage across collector load RC and signal voltage is ………..
- 180o
- 270o
- 90o
- 0o
Answer : 4
Q19. In the a.c. equivalent circuit of a transistor amplifier, the capacitors are considered ………….
- Short
- Open
- Partially open
- None of the above
Answer : 1
Q20. In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of ………..
- RC + RL
- RC || RL
- RL
- RC
Answer : 4
Q21. The purpose of d.c. conditions in a transistor is to …………..
- Reverse bias the emitter
- Forward bias the collector
- Set up operating point
- None of the above
Answer : 3
Q22. An amplifier has a power gain of 100. Its db gain is ……………
- 10 db
- 20 db
- 40 db
- None of the above
Answer : 2
Q23. In order to get more voltage gain from a transistor amplifier, the transistor used should have …………..
- Thin base
- Thin collector
- Wide emitter
- None of the above
Answer : 1
Q24. The purpose of a coupling capacitor in a transistor amplifier is to ……….
- Increase the output impedance of transistor
- Protect the transistor
- Pass a.c. and block d.c.
- Provide biasing
Answer : 3
Q25. The purpose of emitter capacitor (i.e. capacitor across RE) is to ……….
- Avoid voltage gain drop
- Forward bias the emitter
- Reduce noise in the amplifier
- None of the above
Answer : 1
Electricity Single Stage Transistor Amplifiers MCQ
Q26. The ratio of output impedance of a CE amplifier is ……………
- About 1
- Low
- High
- Moderate
Answer : 4
Q27. If a transistor amplifier feeds a load of low resistance (e.g. speaker), then voltage gain will be ………….
- High
- Very high
- Moderate
- Low
Answer : 4
Q28. If the input capacitor of a transistor amplifier is short-circuited, then………
- Transistor will be destroyed
- Biasing conditions will change
- Signal will not reach the base
- None of the above
Answer : 2
Q29. The radio wave picked up by the receiving antenna is amplified about …….. times to have reasonable sound output
- 1000
- A million
- 100
- 10000
Answer : 2
Q30. A CE amplifier is also called ………….. circuit
- Grounded emitter
- Grounded base
- Grounded collector
- None of the above
Answer : 1
Q31. The d.c. load of a transistor amplifier is generally ………….. that of a a.c. load
- The same as
- Less than
- More than
- None of the above
Answer : 3
Q32. The value of collector load RC in a transistor amplifier is ………… the output impedance of the transistor.
- The same as
- Less than
- More than
- None of the above
Answer : 2
Electricity Single Stage Transistor MCQ
Q33. A single stage transistor amplifier with collector load RC and emitter resistance RE has a d.c. load of ……….
- RC
- RC || RE
- RC – RE
- RC + RE
Answer : 4
Q34. In transistor amplifiers, we generally use ………….. capacitors.
- Electrolytic
- Mica
- Paper
- Air
Answer : 1
Q35. A single stage transistor amplifier with no load sees an a.c. load of ……..
- RC + RE
- RC
- RC || RE
- RC/RE
Answer : 2
Q36. The output power of a transistor amplifier is more than the input power because the additional power is supplied by …………
- Transistor
- Biasing circuit
- Collector supply VCC
- None of the above
Answer : 3
Electricity Single Stage Transistor MCQ
Q37. A transistor converts ……………
- dc. power into a.c. power
- ac. power into d.c. power
- high resistance into low resistance
- none of the above
Answer : 1
Q38. A transistor amplifier has high output impedance because ………..
- Emitter is heavily doped
- Collector has reverse bias
- Collector is wider than emitter or base
- None of the above
Answer : 2
Q39. For highest power gain, one would use …………….. configuration
- CC
- CB
- CE
- none of the above
Answer : 3
Q40. CC configuration is used for impedance matching because its ……………..
- Input impedance is very high
- Input impedance is low
- Output impedance is very low
- None of the above
Answer : 1
Electricity Single Stage Transistor MCQ