Explore topic-wise MCQs in Analog Circuits.

This section includes 8 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.

Given that for a transistor, hie = 1100Ω, hfe = 50, hre = 2*10-4 and hoe = 2μΩ-1. Find CB h-parameters.

A. hfb = 1, hib = 22, hob = 3μΩ-1, hrb = -1.5×10-4
B. hfb = -0.98, hib = -21.56, hob = 0.03μΩ-1, hrb = 1.5×10-4
C. hfb = -0.98, hib = 21.56, hob = 0.03μΩ-1, hrb = -1.5×10-4
D. hfb = 1, hib = -21.56, hob = 0.03μΩ-1, hrb = -2×10-4
Answer» D. hfb = 1, hib = -21.56, hob = 0.03μΩ-1, hrb = -2×10-4
Discussion
2.

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

A. 112.2Ω
B. 0Ω
C. 110Ω
D. 200Ω
Answer» B. 0Ω
Discussion
3.

For the given circuit, input resistance RI = 20Ω, hfe = 50. Output resistance = ∞. Find the new values of input and output resistance, if a base resistance of 2kΩ is added to the circuit.

A. RI = 20Ω, RO = ∞
B. RI = 20Ω, RO = 2kΩ
C. RI = 59Ω, RO = ∞
D. RI = 59Ω, RO = 2kΩ
Answer» D. RI = 59Ω, RO = 2kΩ
Discussion
4.

Consider the following circuit, where source current = 10mA, hfe = 50, hie = 1100Ω, then for the transistor circuit, find output resistance RO and input resistance RI.

A. RO = 0, RI = 21Ω
B. RO = ∞, RI = 0Ω
C. RO = ∞, RI = 21Ω
D. RO = 10, RI = 21Ω
Answer» D. RO = 10, RI = 21Ω
Discussion
5.

Given that IB = 5mA and hfe = 55, find load current.

A. 28mA
B. 280mA
C. 2.5A
D. 2A
Answer» C. 2.5A
Discussion
6.

Consider the circuit. Given hfe = 50, hie = 1200Ω. Find voltage gain.

A. – 278
B. -277.9
C. – 300
D. – 280
Answer» B. -277.9
Discussion
7.

Given hfe = 60, hie=1000Ω, hoe = 20μ Ω–, hre = 2 * 10-4. Find the current gain of the BJT, correct up to two decimal points.

A. – 58.44
B. -59.21
C. – 60.10
D. – 60.00
Answer» B. -59.21
Discussion
8.

Consider the following circuit. __________ provides DC isolation. _____________ prevents a decrease in voltage gain. _____________ is used to control the bandwidth.

A. C3, C1, C4
B. C4, C1, C2
C. C2, C3, C2
D. C4, C3, C2
Answer» C. C2, C3, C2
Discussion