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BEL Deputy Engineer 2017 Electronics: Practice Quiz 1
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Question 1
The dynamic drain resistance of MOSFET is of the order of:
Question 2
The forbidden energy gap in conductors. semiconductors and insulators are EG 1, EG 2 and EG 3 respectively. The relation among them is
Question 3
For the circuit shown below if gm = 3×10–3 and RS= 3000Ω then what is the value of R0?
Question 4
The current gain of a bipolar transistor drops at high frequency because of
Question 5
For a second-order system,
is equal to zero in the transfer function give by
Which one of the following is correct?
is equal to zero in the transfer function give by Which one of the following is correct?
Question 6
If 
is an even function, then what is its Fourier transform 
?
is an even function, then what is its Fourier transform ? Question 7
Statement (I): Dirichlet’s conditions restrict the periodic signal x(t), to be represented by Fourier series, to have only finite number of maxima and minima.
Statement (II): x(t) should possess only a finite number of discontinuities.
Statement (II): x(t) should possess only a finite number of discontinuities.
Question 8
The Boolean equation 
can be simplified to.
can be simplified to. Question 9
The effective length of an antenna is a measure of
Question 10
Percentage modulation of an AM wave having a power content of 8 KW at carrier frequency and 2 KW in each of its side bands is
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ESE & GATE ECGeneralFeb 12ESE & GATE EC
