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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 18
1.
When a transistor is to be at a temperature above 25°C
smaller heat sink be provided
maximum power rating be derated
biasing circuit must be strengthened
earth connections must be connected through a resistor
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.

Assertion (A): In monolithic IC the components are part of one chip

Reason (R): An op-amp is a high gain dc amplifier

Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
The most widely used LC oscillator is
Hartley oscillator
Crystal oscillator
Colpitt's oscillator
Clapp's oscillator
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Which of the following statement is wrong?
A depletion type N-channel MOSFET conducts even when VGS = 0
A BJT is very sensitive to radiation whereas FET is relatively immune
Bipolars need higher supply voltage than FETs
Both N-channel as well as p-channel JFETs work in the depletion mode
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
The disadvantage of FET over BJT is
poor high frequency performance
low power-handling ability
low values of voltage gain
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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