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
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
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
Question 2 (1 of 1 Based on Passage)
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
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
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 200 | |
b. | 50 | |
c. | 32 | |
d. | 8 | |
Question 4
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 current is related to as
Choices
| Choice (4) | Response | |
|---|---|---|
a. | ||
b. | ||
c. | ||
d. | ||