Transistor Biasing Mcqs | Set 3

MCQs 1: Thermal runaway occurs when_________________?

Collector is reverse biased

Transistor is not biased

Emitter is forward biased

Junction capacitance is high

Answer Explanation

MCQs 2: The operating point ________________ on the a.c. load line?

Also line

Does not lie

May or may not lie

Data insufficient

Answer Explanation

MCQs 3: The operating point is also called the _______________?

Cut off point

Quiescent point

Saturation point

None of the above

Answer Explanation

MCQs 4: For good stabilsation in voltage divider bias, the current I1 flowing through R1 and R2 should be equal to or greater than_____________?

10 IB

3 IB

2 IB

4 IB

Answer Explanation

MCQs 5: The disadvantage of base resistor method of transistor biasing is that it_________________?

10 IB

3 IB

2 IB

4 IB

Answer Explanation

MCQs 6: An ideal value of stability factor is________________?

100

200

More than 200

Answer Explanation

MCQs 7: The leakage current in a silicon transistor is about_____________ the leakage current in a germanium transistor?

One hundredth

One tenth

One thousandth

One millionth

Answer Explanation

MCQs 8: The biasing circuit has a stability factor of 50. If due to temperature change, ICBO changes by 1 µA, then IC will change by___________________?

100 µA

25 µA

20 µA

50 µA

Answer Explanation

MCQs 9: If the maximum collector current due to signal alone is 3 mA, then zero signal collector current should be at least equal to___________________?

6 mA

3 mA

1 mA

Answer Explanation

MCQs 10: The circuit that provides the best stabilization of operating point is___________________?

Base resistor bias

Collector feedback bias

Potential divider bias

None of the above

Answer Explanation

MCQs 1: Thermal runaway occurs when_________________?

MCQs 2: The operating point ________________ on the a.c. load line?

MCQs 3: The operating point is also called the _______________?

MCQs 4: For good stabilsation in voltage divider bias, the current I1 flowing through R1 and R2 should be equal to or greater than_____________?

MCQs 5: The disadvantage of base resistor method of transistor biasing is that it_________________?

MCQs 6: An ideal value of stability factor is________________?

MCQs 7: The leakage current in a silicon transistor is about_____________ the leakage current in a germanium transistor?

MCQs 8: The biasing circuit has a stability factor of 50. If due to temperature change, ICBO changes by 1 µA, then IC will change by___________________?

MCQs 9: If the maximum collector current due to signal alone is 3 mA, then zero signal collector current should be at least equal to___________________?

MCQs 10: The circuit that provides the best stabilization of operating point is___________________?

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