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

If 250V is the RMS value of alternative voltage, then its peak value Vowill be:

Question # 2

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

Question # 3

The open loop gain of OP-AMP is of the order of

Question # 4

Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is

Question # 5

Mathematical manipulation of the two quantized states can be best carried if they are represented by

Question # 6

The highest value reached by the voltage or current:

Question # 7

An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current

Question # 8

In half wave rectification

Question # 9

For the normal operation of the transistor, its

Question # 10

When a transistor is used as a switch the circuit in which the current is to be switched OFF and ON, is connected between the

Question # 11

The closed loop gain of the inverting amplifier is written as

Question # 12

The value of the potential difference across the depletion region for the case of germanium is

Question # 13

The Instantaneous value of alternative current maybe:

Question # 14

The closed loop gain of the non-inverting amplifier is given by

Question # 15

Most OP-AMP operates with

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 Which of the following has a great concentration of impurity
A. base
B. emitter
C. collector
D. none of these
2 In a transistor, the central region is called
A. collector
B. emitter
C. base
D. none of them
3 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
4 A resonance curve for RLC series circuit is a plot of frequency versus
A. Voltage
B. Current
C. Impedance
D. Reactance
5 If the value of C in a series RLC circuit is increased, the resonant frequency
A. Is not affected
B. Increase
C. Remains the same
D. Decreases
6 The most common source of alternating voltage is:
A. Motor
B. Transformer
C. AC genrator
D. Both (A) and (C)
7 Chock consumes externally small
A. Charge
B. Current
C. Power
D. Potential
8 The phase angle of a series RLC circuit at resonance is
A. 180°
B. 90°
C. 0°
D. None of the these
9 The bridge circuit of full wave rectification uses
A. one diode
B. two diode
C. three diode
D. four diode
10 During the negative half-cycle of the half-wave rectification, the diode
A. does not conduct
B. conducts
C. either of these
D. none of these

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