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

Which of the following has a great concentration of impurity

Question # 2

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

Question # 3

A P-N juction or semiconductor diode cannot be used as

Question # 4

The Instantaneous value of alternative current maybe:

Question # 5

When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency

Question # 6

For normal operation of transistor, the batteries

Question # 7

If we connected the ordinary DC ammeter to measure alternating current, it would measure its:

Question # 8

For the normal operation of the transistor, its

Question # 9

The bridge circuit of full wave rectification uses

Question # 10

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

Question # 11

The device which allows only the flow of an A.C. through a circuit is

Question # 12

Alternating current can be transmitted:

Question # 13

The RMS value of alternating current is:

Question # 14

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

Question # 15

The waveform of alternating voltage is a:

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The value of the potential difference across the depletion region for the case of germanium is
A. 0.3 V
B. 0.5 V
C. 0.7 V
D. 0.9 V
2 The phase at the positive peak of an A.C. cycle is:
A. 0º

B. 90º

C. 180º

D. 0 andᏘ
3 If we connected the ordinary DC ammeter to measure alternating current, it would measure its:
A. Instantaneous value
B. RMS value
C. Value averaged over a cycle
D. Either (B) or (C)
4 In describing functions of digital systems, a closed switch will be shown as
A. 0
B. 1
C. low
D. any one of these
5 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
6 The phase angle of a series RLC circuit at resonance is
A. 180°
B. 90°
C. 0°
D. None of the these
7 The bridge circuit of full wave rectification uses
A. one diode
B. two diode
C. three diode
D. four diode
8 Electromagnetic waves transmit energy equal to
A. 1/2 mv2
B. moc2
C. hf/c
D. hf
9 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
10 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

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