Analog Circuits Mock Test 5

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Question 1 of 10

1. If 1/h₁₂ = 10 for a C.E. stage, what is the value of the base to collector capacitance, after Miller multiplication, at the output side?

1.2C_µ

2.2C_µ

1.1C_µ

2.1C_µ

Question 1 of 10

Question 2 of 10

2. Consider its input resistance to be R1. Now, the bypass capacitor is attached, so that the new input resistance is R2. Given that h_ie = 1000Ω and h_fe = 50, find R1-R2.

0Ω

112.2Ω

110Ω

200Ω

Question 2 of 10

Question 3 of 10

3. A voltage amplifier has a voltage gain of 100. What will be gain at 3dB cut-off frequencies?

80.7

70.7

45.7

Question 3 of 10

Question 4 of 10

4. Which of the following statements is most correct to explain role of biasing circuit in the implementation of a transistor circuit?

It is used to provide proper and stable functional environment to all quiescent point parameters

It is used to ensure maximum power is obtained out of the circuit

It is used to provide the quiescent collector current

It is used provide proper voltage to every component in the circuit

Question 4 of 10

Question 5 of 10

5. The Collector feedback configuration is better than __________

C.B. configuration

Voltage divider configuration

C.E. configuration

Fixed Bias Configuration

Question 5 of 10

Question 6 of 10

6. Bandwidth of amplifier is __________

Independent to cut off frequency

Sum of upper cut-off frequency and lower cut-off frequency

Difference between upper cut-off frequency and lower cut-off frequency

Average of upper cut-off frequency and lower cut-off frequency

Question 6 of 10

Question 7 of 10

7. In a simple follower stage, C₂ is a parasitic capacitance arising due to the depletion region between the collector and the substrate. What is the value of C₂?

Infinite

2*C_cs

C_cs

Question 7 of 10

Question 8 of 10

8. -6dB is equivalent to __________ power gain.

0.75

0.5

0.8

0.25

Question 8 of 10

Question 9 of 10

9. Which parasitic capacitors are present at the collector terminal of the B.J.T.?

C_cs and C_b

C_je and C_b

C_b

C_cs and C_µ

Question 9 of 10

Question 10 of 10

10. What is the role of emitter resistance in the transistor amplifying circuit?

To prevent thermal runaway

To prevent increase in gain

To increase gain

To lower the output impedance

Question 10 of 10