### Transistor Biasing

1. A silicon transistor is biased with base resistor method. If β=100, VBE =0.7 V, zero signal collector current IC = 1 mA and VCC = 6V, what is the value of the base resistor RB?

1. 105 kO
2. 530 kO
3. 315 kO
4. None of the above

530 kO

2. An ideal value of stability factor is __________..

1. 100
2. 200
3. More than 200
4. 1

1

3. For faithful amplification by a transistor circuit, the value of VBE should __________ for a silicon transistor

1. Be zero
2. Be 0.01 V
3. Not fall below 0.7 V
4. Be between 0 V and 0.1 V

Not fall below 0.7 V

4. For faithful amplification by a transistor circuit, the value of VCE should __________ for silicon transistor

1. Not fall below 1 V
2. Be zero
3. Be 0.2 V
4. None of the above

Not fall below 1 V

5. For germanium transistor amplifier, VCE should __________ for faithful amplification

1. Be zero
2. Be 0.2 V
3. Not fall below 0.7 V
4. None of the above

Not fall below 0.7 V

6. For good stabilsation in voltage divider bias, the current I1 flowing through R1 and R2 should be equal to or greater than

1. 10 IB
2. 3 IB
3. 2 IB
4. 4 IB

10 IB

7. For proper amplification by a transistor circuit, the operating point should be located at the __________ of the d.c. load line

1. The end point
2. Middle
3. The maximum current point
4. None of the above

Middle

8. For proper operation of the transistor, its collector should have __________

1. Proper forward bias
2. Proper reverse bias
3. Very small size
4. None of the above

Proper reverse bias

9. If biasing is not done in an amplifier circuit, it results in __________

1. Decrease in the base current
2. Unfaithful amplification
3. Excessive collector bias
4. None of the above