Analog Electronics - ECE Questions and Answers

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A half wave diode rectifier has a capacitance input filter. If input voltage is V_m sin ωt, PIV is

V_m

2 V_m

3 V_m

4 V_m

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An amplifier with loop gain Aβ will be more stable for value of Aβ as

0.95

0.7

1.2

1.5

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Study the circuit of figure and examine the following statements

It is an active low pass finer.
It is a second order filter.
The change in gain is 40 dB/decade.

Which of the above statements are correct?

1, 2 and 3

1 and 2

1 and 3

2 and 3

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In a circuit of figure, V_s = 10 cos(ωt) power drawn by the 2Ω resistor is 4 watts. The power factor is

0.3

0.4

0.6

none

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The quiescent collector current I_C, and collector to emitter voltage V_CE in a CE connection are the values when

ac signal is zero

ac signal is low

ac signal is negative

either (a) or (b)

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In the op-amp circuit of figure, V₀ =

V_i

3 V_i

5 V_i

0.5 V_i

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Figure shows the self bias circuit for CE amplifier and its equivalent circuit. V_BB and R_B respectively are

10 V and 4 k ohm

5 V and 4 k ohm

2 V and 4 k ohm

2 V and 10 k ohm