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Semiconductor Electronics question bank (Physics)

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Q1.

$A$ $p-n$ junction diode cannot be used

(A)

as a rectifier.

(B)

for converting light energy to electrical energy.

(C)

for getting light radiation.

(D)

for increasing the amplitude of an $a.c.$ signal.

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Q2.

In an oscillator,if $\beta$ is the feedback factor and $A$ is the gain of the amplifier,then sustained oscillations are obtained when:

(A)

$A/\beta = 1$

(B)

$A\beta \lt 1$

(C)

$A\beta = 1$

(D)

$A\beta \gt 1$

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