Test: Amplifiers


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10 Questions MCQ Test GATE Electrical Engineering (EE) 2023 Mock Test Series | Test: Amplifiers

Test: Amplifiers for Railways 2022 is part of GATE Electrical Engineering (EE) 2023 Mock Test Series preparation. The Test: Amplifiers questions and answers have been prepared according to the Railways exam syllabus.The Test: Amplifiers MCQs are made for Railways 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Amplifiers below.
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Test: Amplifiers - Question 1

What is the output waveform of the circuit?

Test: Amplifiers - Question 2

Consider the circuit of fig. The transistor parameters are  β = 120 and VA = ∞

Que: The hybrid-π parameter values of gm ,rπ  and ro are

Detailed Solution for Test: Amplifiers - Question 2

Test: Amplifiers - Question 3

Consider the circuit of fig. The transistor parameters are  β = 120 and VA = ∞

Que: The small signal votlage gain Av = vo/vs

Detailed Solution for Test: Amplifiers - Question 3

Test: Amplifiers - Question 4

The nominal quiescent collector current of a transistor is 1.2 mA. If the range of β for this transistor is 80 ≤ β ≤ 120 and if the quiescent collector current changes by +-10 percent, the range in value for rπ is

Detailed Solution for Test: Amplifiers - Question 4

Test: Amplifiers - Question 5

Consider the circuit in fig. The transistor parameter are β = 100 and VA = ∞.

If Q-point is in the center of the load line and ICQ = 0.5 mA, the values of VBB and RC are

Detailed Solution for Test: Amplifiers - Question 5

Test: Amplifiers - Question 6

Consider the common Base amplifier shown in fig. The parameters are β = 100, gm = 2 mS and ro = 250 kΩ. Find the Thevenin equivalent faced by load resistance RL .

Que: The Thevenin voltage vTH is

Detailed Solution for Test: Amplifiers - Question 6

The equivalent circuit is shown below

Test: Amplifiers - Question 7

Consider the common Base amplifier shown in fig. The parameters are gm = 2 mS and ro = 250 kΩ. Find the Thevenin equivalent faced by load resistance RL .

Que: The Thevenin equivalent resistance RTH is

Detailed Solution for Test: Amplifiers - Question 7

The equivalent small-signal circuit is shown in fig.

Test: Amplifiers - Question 8

The common-base amplifier is drawn as a two-port in fig. The parameters are β =100, gm = 3 mS, and ro =  800 kΩ.

Que: The h-parameter h21 is

Detailed Solution for Test: Amplifiers - Question 8

The equivalent small-signal circuit is shown in fig. 

Test: Amplifiers - Question 9

The common-base amplifier is drawn as a two-port in fig. The parameters are β =100, gm = 3 mS, and ro =  800 kΩ.

Que: The h-parameter h12 is

Detailed Solution for Test: Amplifiers - Question 9

Test: Amplifiers - Question 10

Consider the source-follower circuit in fig. The values of parameter are gm = 2 mS and ro = 100 kΩ.

Que: The voltage gain Av is

Detailed Solution for Test: Amplifiers - Question 10

The small-signal equivalent circuit is shown in fig. 

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