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

The bridge circuit of full wave rectification uses

Question # 2

Which of the following diode is used for the detection of light

Question # 3

The magnitude of alternative voltage V:

Question # 4

The RMS value of alternating current is:

Question # 5

The Instantaneous value of alternative current maybe:

Question # 6

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

Question # 7

In frequency modulation (FM), the carrier waves amplitude

Question # 8

Electromagnetic waves transmit energy equal to

Question # 9

Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:

Question # 10

The length of rotating vector (on a certain scale) represents the:

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

Average value of A.C voltage during one cycle is

Question # 15

Conversion of alternating current into direct current is called

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 A resonance curve for RLC series circuit is a plot of frequency versus
A. Voltage
B. Current
C. Impedance
D. Reactance
2 The alternative voltage of current is actually measured by:
A. Its RMS value
B. Square root of its mean square value
C. Instantaneous value
D. Peak value
3 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
4 Which of the following has a great concentration of impurity
A. base
B. emitter
C. collector
D. none of these
5 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
6 Alternating current is produced by a voltage source which polarity:
A. Remains the same
B. Reverse after period T
C. Keeps on reversing with time
D. Reverse after every time interval T/2
7 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
8 The Instantaneous value of alternative current maybe:
A. The same as its RMS value
B. Greater than its Rms value
C. The same as its peak value
D. Any of these
9 The output voltage of half wave rectification is in the form of
A. a smooth curve
B. a smooth wave
C. pulses
D. all of the above
10 A P-N juction or semiconductor diode cannot be used as
A. A rectifier
B. Detector
C. Oscillator
D. An amplifier

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