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GATE 2024 Subject Name Foundation Quiz 65

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Question 1

The current gain of a bipolar transistor drops at high frequencies because of

Question 2

To get higher cut-off frequency in a BJT, base sheet resistance should be.

Question 3

For CE BJT amplifier, high frequency response is limited by

Question 4

In a BJT circuit, capacitor CBE will result in:

Question 5

A common emitter BJT amplifier is operating at high frequency, it π- circuit model as shown below-

If the transistor current Ic= 1.2mA, Cm = 2pf & hfe= 20 at 40 MHz

Then find out the frequency at which gain of amplifier is unity. (VT = 25mV & η = 1)

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May 17ESE & GATE EC