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 output voltage of half wave rectification is in the form of

Question # 2

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

Question # 3

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

Question # 4

The closed loop gain of the inverting amplifier is written as

Question # 5

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

Question # 6

The alternative voltage of current is actually measured by:

Question # 7

At resonance, the phase angle for RLC series resonance circuit equals

Question # 8

Electromagnetic waves transmit energy equal to

Question # 9

In half wave rectification

Question # 10

Peak value of alternative current is:

Question # 11

The wave form of alternating voltage is the graph between:

Question # 12

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

Question # 13

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

Question # 14

When the emitter-base junction of a transistor is reverse biased, collector current

Question # 15

An A.C varies as a function of

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 At resonance, the phase angle for RLC series resonance circuit equals
A. 0°
B. 90°
C. 180°
D. 270°
2 A sinusoidally alternating voltage or current can be graphically represented by a:
A. Vector
B. Rotating vector
C. Clockwise vector
D. Anticlockwise voltage vector
3 Which one of the following is correct?
A. Vo= 1.414 Vrms
B. Iams= 1.414 Io
C. VO = 10.70 Vrms
D. Both a and b
4 During the positive half-cycle in the half-wave rectification,the diode
A. does not conduct
B. conducts
C. either of these
D. neither of these
5 A digital system deals with quantities or variables which have
A. only one state
B. only two discrete states
C. three discrete states
D. four discrete states
6 In a transistor, the central region is called
A. collector
B. emitter
C. base
D. none of them
7 The phase angle of a series RLC circuit at resonance is
A. 180°
B. 90°
C. 0°
D. None of the these
8 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
A. base and emitter
B. collector and emitter
C. base and collector
D. any one of these
9 For a n-p-n transistor, the conventional current equation can be written as
A. IE+ IC= IB
B. IC- IB= IE
C. IC+ IB= IE
D. IB+ IE= IC
10 Conversion of alternating current into direct current is called
A. amplification
B. rectification
C. conduction
D. polarization

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