ECAT Pre Computer Science Chapter 16 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 16 Alternating Current

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

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ECAT Physics Chapter 16 Alternating Current

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Question # 1

Nowadays, Most of the electric energy is produced by the A.C. generators using:

Question # 2

The R1= infinity and R2= 0, then the gain of non-inverting amplifier is

Question # 3

Chock consumes externally small

Question # 4

The waveform of alternating voltage is a:

Question # 5

A signal is amplified at the output without any change of phase, if it is applied at the

Question # 6

In which of the following components, pn-junction is used

Question # 7

The value of output resistance of OP-AMOP is of the order of

Question # 8

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

Question # 9

The average of A.C. current and voltage over a complete cycle is

Question # 10

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

Question # 11

Alternating current can be transmitted:

Question # 12

In a transistor, if the central region is p-type then this type of transistor is known as

Question # 13

Average value of A.C voltage during one cycle is

Question # 14

During the positive half-cycle in the half-wave rectification,the diode

Question # 15

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

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 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
2 A signal appears after amplification, at the output terminal with a phase shift of 180° , if it is applied at
A. inverting input
B. non-inverting input
C. any one of the input terminal
D. none of them
3 The power factor of resonant series circuit is
A. 1
B. 0
C. -1
D. 0.5
4 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
5 The bridge circuit of full wave rectification uses
A. one diode
B. two diode
C. three diode
D. four diode
6 Mathematical manipulation of the two quantized states can be best carried if they are represented by
A. high - low
B. yes - no
C. on - off
D. 0 - 1
7 When the pn-junction is in reversed biased, current flows through the junction due to the
A. majority carriers
B. minority carriers
C. either of them
D. none of them
8 An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current
A. Decreases
B. Increases
C. Does not change
D. Momentarily goes to zero
9 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)
10 In describing functions of digital systems, a closed switch will be shown as
A. 0
B. 1
C. low
D. any one of these

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  • Iiqra Fatima

    Iiqra Fatima

    25 May 2018

    You should let us practice difficult mcqs ..These are too easy for ECAT level....Thanku

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