Analog Circuits-Single-Stage BJT and MOSFET Amplifiers [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 1 - 4 of 48

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Question 1

Single-Stage BJT and MOSFET Amplifiers
Biasing, Bias Stability

Appeared in Year: 2007

Question

MCQ▾

For the BJT circuit shown, assume that the of the transistor is very large and . The mode of operation of the BJT is

The BJT Circuit Shown

Choices

Choice (4)Response

a.

Reverse active

b.

Saturation

c.

Normal active

d.

Cut-off

Passage

In the following transistor circuit, and and all the capacitances are very large

The Circuit Consists of Transistor, Capacitors and Resistors

Question 2 (1 of 1 Based on Passage)

Single-Stage BJT and MOSFET Amplifiers
Mid-Frequency Small Signal Analysis and Frequency Response

Appeared in Year: 2008

Question

MCQ▾

The mid-band voltage gain of the amplifier is approximately

Choices

Choice (4)Response

a.

- 90

b.

- 120

c.

- 180

d.

- 60

Question 3

Single-Stage BJT and MOSFET Amplifiers
Mid-Frequency Small Signal Analysis and Frequency Response

Appeared in Year: 2013

Question

MCQ▾

The ac schematic of an NMOS common-source state is shown in the figure below, where part of the biasing circuits has been omitted for simplicity. For the n -channel MOSFET M, the transconductance = 1 mA/V, and body effect and channel length modulation effect are to be neglected. The lower cut-off frequency in HZ of the circuit is approximately at

Voltage Feedback with Input and Output

Choices

Choice (4)Response

a.

200

b.

50

c.

32

d.

8

Question 4

Single-Stage BJT and MOSFET Amplifiers
Biasing, Bias Stability

Appeared in Year: 2008

Question

MCQ▾

For the circuit shown in the following figure, transistor and are identic NMOS transistors. Assume the is in saturation and the output is unloaded.

The Circuit of 2 NMOS Transistors with Its Output is Unloaded

The current is related to as

Choices

Choice (4)Response

a.

b.

c.

d.

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