Discussion
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- Question
If a 2 mV signal produces a 2 V output, what is the voltage gain?
Options- A. 0.001
- B. 0.004
- C. 100
- D. 1000
- Correct Answer
- 1000
- 1. Often a common-collector will be the last stage before the load; the main function(s) of this stage is to:
Options- A. provide voltage gain
- B. provide phase inversion
- C. provide a high-frequency path to improve the frequency response
- D. buffer the voltage amplifiers from the low-resistance load and provide impedance matching for maximum power transfer Discuss
- 2. What is the current gain for a common-base configuration where IE = 4.2 mA and IC = 4.0 mA?
Options- A. 16.80
- B. 1.05
- C. 0.20
- D. 0.95 Discuss
- 3. The ends of a load line drawn on a family of curves determine:
Options- A. saturation and cutoff
- B. the operating point
- C. the power curve
- D. the amplification factor Discuss
- 4. When a silicon diode is forward biased, what is VBE for a C-E configuration?
Options- A. voltage-divider bias
- B. 0.4 V
- C. 0.7 V
- D. emitter voltage Discuss
- 5. A transistor has a
of 250 and a base current, IB, of 20 µ A. The collector current, IC, equals:
Options- A. 500 µ A
- B. 5 mA
- C. 50 mA
- D. 5 A Discuss
- 6. In a transistor, collector current is controlled by:
Options- A. collector voltage
- B. base current
- C. collector resistance
- D. all of the above Discuss
- 7. In a C-E configuration, an emitter resistor is used for:
Options- A. stabilization
- B. ac signal bypass
- C. collector bias
- D. higher gain Discuss
- 8. Which is beta's current ratio?
Options- A. IC/IB
- B. IC/IE
- C. IB/IE
- D. IE/IB Discuss
- 9. When transistors are used in digital circuits they usually operate in the:
Options- A. active region
- B. breakdown region
- C. saturation and cutoff regions
- D. linear region Discuss
- 10. Total emitter current is:
Options- A. IE ? IC
- B. IC + IE
- C. IB + IC
- D. IB ? IC Discuss
Bipolar Junction Transistors (BJT) problems
Search Results
Correct Answer: buffer the voltage amplifiers from the low-resistance load and provide impedance matching for maximum power transfer
Correct Answer: 0.95
Correct Answer: saturation and cutoff
Correct Answer: 0.7 V
Correct Answer: 5 mA
Correct Answer: base current
Correct Answer: stabilization
Correct Answer: IC/IB
Correct Answer: saturation and cutoff regions
Correct Answer: IB + IC
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