MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In the given circuit, hfe = 50 and hie = 1000Ω, find overall input and output resistance. |
| A. | RI=956Ω, RO=1.6 kΩ |
| B. | RI=956 kΩ, RO=2 kΩ |
| C. | RI=956 Ω, RO=2 kΩ |
| D. | RI=900Ω, RO=10 kΩ |
| Answer» D. RI=900Ω, RO=10 kΩ | |
| 2. |
Find the transconductance of the network given below, provided that gm1 = 30mΩ-1. VT = 25mV, VBias > 4V. |
| A. | 30mΩ-1 |
| B. | 10mΩ-1 |
| C. | 1mΩ-1 |
| D. | 20mΩ-1 |
| Answer» B. 10mΩ-1 | |
| 3. |
Consider the figure shown.Given that gm1 = 30mΩ-1 and gm2 = 50mΩ-1, α1 = 1.1, α2 = 1.5 what is the transconductance of the entire network? |
| A. | 80 mΩ-1 |
| B. | 75 mΩ-1 |
| C. | 33 mΩ-1 |
| D. | 55 mΩ-1 |
| Answer» E. | |
| 4. |
What is a cascade amplifier? |
| A. | A cascade of two CE amplifiers |
| B. | A cascade of two CB amplifiers |
| C. | A cascade of CE and CB amplifiers |
| D. | A cascade of CB and CC amplifiers |
| Answer» D. A cascade of CB and CC amplifiers | |
| 5. |
Consider a Darlington amplifier. In the self bias network, the biasing resistances are 220kΩ and 400 kΩ. What can be the correct value of input resistance if hfe = 50 and emitter resistance = 10kΩ. |
| A. | 141 kΩ |
| B. | 15 MΩ |
| C. | 20 MΩ |
| D. | 200 kΩ |
| Answer» B. 15 MΩ | |
| 6. |
Darlington amplifier is an emitter follower. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
In a Darlington pair, the overall β=15000.β1=100. Calculate the collector current for Q2 given base current for Q1 is 20 μA. |
| A. | 300 mA |
| B. | 298 mA |
| C. | 2 mA |
| D. | 200mA |
| Answer» C. 2 mA | |
| 8. |
Given the following circuit.It is given that hfe=55, hie=1kΩ, hoe=25μΩ-1. Calculate the net current gain and the voltage gain of the network. |
| A. | AI=192.6, Av=220 |
| B. | AI=1, AV=220 |
| C. | AI=192.6, AV=1 |
| D. | AI=192.6, AV=55 |
| Answer» D. AI=192.6, AV=55 | |
| 9. |
Consider the circuit shown below where hfe=50.Calculate the input resistance of the network. |
| A. | 255 kΩ |
| B. | 13 MΩ |
| C. | 5 MΩ |
| D. | 250 kΩ |
| Answer» C. 5 MΩ | |