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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 14
36.
Which of the following statement is correct?
A FET is a current controlled device
A BJT is always reverse biased
The semi-conductor material of the gate in an N-channel JFET is p-type
JFET has higher input impedance than MOSFET
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
In a bipolar transistor at room temperature if the emitter current is doubled the voltage across its base emitter junction
doubles
halves
increase by about 20 mV
decrease by about 20 mV
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Which one of the following power amplifier has the maximum efficiency?
Class A
Class B
Class AB
Class C
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Negative feedback lowers the cut off frequency and increase the upper cut off frequency of amplifier.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
In a single-stage RC coupled common emitter amplifier, the phase shift at the lower 3 dB frequency is
zero
135°
180°
225°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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