Transistor Biasing

11. If the temperature increases, the value of VCE __________

  1. Remains the same
  2. Is increased
  3. Is decreased
  4. None of the above

Correct answer: (C)
Is decreased

12. If the value of collector current IC increases, then the value of VCE __________

  1. Remains the same
  2. Decreases
  3. Increases
  4. None of the above

Correct answer: (B)
Decreases

13. In a base resistor method, if the value of β changes by 50, then collector current will change by a factor __________

  1. 25
  2. 50
  3. 100
  4. 200

Correct answer: (B)
50

14. In a particular biasing circuit, the value of RE is about __________

  1. 10 kO
  2. 1 MO
  3. 100 kO
  4. 800 O

Correct answer: (D)
800 O

15. In a transistor amplifier circuit VCE = VCB + __________.

  1. VBE
  2. 2VBE
  3. 5 VBE
  4. None of the above

Correct answer: (A)
VBE

16. In the design of a biasing circuit, the value of collector load RC is determined by __________

  1. VCE consideration
  2. VBE consideration
  3. IB consideration
  4. None of the above

Correct answer: (A)
VCE consideration

17. In voltage divider bias, operating point is 3 V, 2 mA. If VCC = 9 V, RC = 2.2 kO, what is the value of RE ?

  1. 2000 O
  2. 1400 O
  3. 800 O
  4. 1600 O

Correct answer: (C)
800 O

18. In voltage divider bias, VCC = 25 V; R1 = 10 kO; R2 = 2.2 V ; RC = 3.6 V and RE =1 kO. What is the emitter voltage?

  1. 7 V
  2. 3 V
  3. V8
  4. V

Correct answer: (D)
V

19. Operating point represents __________..

  1. Values of IC and VCE when signal is applied
  2. The magnitude of signal
  3. Zero signal values of IC and VCE
  4. None of the above

Correct answer: (C)
Zero signal values of IC and VCE

20. The base resistor method is generally used in __________

  1. Amplifier circuits
  2. Switching circuits
  3. Rectifier circuits
  4. None of the above

Correct answer: (B)
Switching circuits

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