ECAT Pre Engineering Physics Chapter 16 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 16 Alternating Current

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 16 Alternating Current

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Physics ECAT Pre Engineering Chapter 16 Alternating Current

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Question # 1

For normal operation of transistor, the batteries

Question # 2

Which one of the following is correct?

Question # 3

During the negative half-cycle of the half-wave rectification, the diode

Question # 4

The entire wave form of sinusoidal voltage is actually a set of all the:

Question # 5

The value of the input resistance of OP-AMP is of the order of

Question # 6

A resonance curve for RLC series circuit is a plot of frequency versus

Question # 7

The phase at the positive peak of an A.C. cycle is:

Question # 8

If the value of C in a series RLC circuit is increased, the resonant frequency

Question # 9

The circuit which is used to smooth the output voltage of the full-wave rectification is known as

Question # 10

The r.m.s. value of alternating current is equal to its maximum value at angle of

Question # 11

A changing magnetic flux creates around itself

Question # 12

Transmitting antenna emits

Question # 13

When the pn-junction is in reversed biased, current flows through the junction due to the

Question # 14

If we connect a A.C. volt meter to read A.C. voltage, It would read its:

Question # 15

The Instantaneous value of alternative current maybe:

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The closed loop gain of the inverting amplifier is written as
A. G = R2/R1
B. G = 1 + R2/R1
C. G = -R2/R1
D. G = 1 - R2/R1
2 The power factor of resonant series circuit is
A. 1
B. 0
C. -1
D. 0.5
3 Peak value of alternative current is:
A. one of its Instantaneous value
B. Equal to its RMS value
C. The same as its peak-to-peak value
D. Both (B) and (C)
4 The basic circuit element in D.C. circuit is:
A. A capacitor
B. A resistor
C. An inductor
D. Both (A) and (C)
5 The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
A. zero
B. infinity
C. one
D. any one of these
6 The entire wave form of sinusoidal voltage is actually a set of all the:
A. Positive maximum value + Voand negative maximum value -Vo
B. Posiotive maximum value +Vo and zero
C. Zero and negative maximum value -Vo
D. Any of these
7 The sum of positive and negative peak values is called:
A. Instantaneous value
B. Peak value
C. Rms valuie
D. Peak-to peak-value
8 The basic circuit element in A.C. circuits are:
A. Resistor and capacitor
B. Resistor and Inductor
C. Capacitor only
D. Both (B) and (C)
9 In half wave rectification
A. both halves of the input voltage is used
B. only one half of the input voltage is used
C. either of these
D. none of these
10 The value of the potential difference across the depletion region for the case of germanium is
A. 0.3 V
B. 0.5 V
C. 0.7 V
D. 0.9 V

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