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

At resonance, the impedance of RLC series circuit is

Question # 2

In describing functions of digital systems, a closed switch will be shown as

Question # 3

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

Question # 4

For normal operation of transistor, the batteries

Question # 5

In frequency modulation (FM), the carrier waves amplitude

Question # 6

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

Question # 7

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

Question # 8

Which one of the following waves belongs to electromagnetic spectrum

Question # 9

An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is

Question # 10

Alternating current can induce voltage because it has a

Question # 11

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

Question # 12

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

Question # 13

The value of current gain of n-p-n transistor is of the order of

Question # 14

Chock consumes externally small

Question # 15

Electromagnetic waves transmit energy equal to

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 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
2 In a transistor, the central region is called
A. collector
B. emitter
C. base
D. none of them
3 In a transistor, if the central region is p-type then this type of transistor is known as
A. p-n-p transistor
B. n-p-n transistor
C. either of these
D. none of these
4 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
5 SI unit of impedance is
A. hertz
B. henry
C. ampere
D. ohms
6 Which of the following diode is used to derive the current in external circuit when light is incident in the circuit
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
7 Alternating current can induce voltage because it has a
A. High peak value
B. Varying magnetic field
C. Stronger field than direct curren
D. Constant magnetic field
8 A sinusoidally alternating voltage or current can be graphically represented by a:
A. Vector
B. Rotating vector
C. Clockwise vector
D. Anticlockwise voltage vector
9 In a transistor, if the central region is n-type, then this type of transistor is known as
A. n-p-n transistor
B. p-n-p transistor
C. either of these
D. none of these
10 The amplifier which us used to perform mathematical operations electronically is known as
A. calculator
B. OP-AMP
C. computer
D. any one of them

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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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