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 one of the following is correct?

Question # 2

In free space, the speed of electromagnetic waves is

Question # 3

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

Question # 4

The total reactance of a series RLC circuit at resonance is

Question # 5

The input resistance of the OP-AMP is the resistance between the

Question # 6

Chock consumes externally small

Question # 7

In an A.C circuit with resistor only, the current and voltage have a phase angle of

Question # 8

The most common source of alternating voltage is:

Question # 9

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

Question # 10

The sum of positive and negative peak values is called:

Question # 11

The amplifier which us used to perform mathematical operations electronically is known as

Question # 12

Peak value of alternative current is:

Question # 13

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

Question # 14

Alternating current is produced by a voltage source which polarity:

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 basic circuit elements of A.C circuit are
A. Resistor
B. Inductor
C. Capacitor
D. All the three
2 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
3 OP-AMP has the following input terminals
A. one
B. two
C. three
D. four
4 Which of the following diodes can operate in the reverse biased condition
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
5 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
6 In an A.C circuit with resistor only, the current and voltage have a phase angle of
A. 90°
B. 0°
C. 180°
D. none of these
7 The total reactance of a series RLC circuit at resonance is
A. zero
B. Equal to the resistance
C. Infinity
D. Capacitive
8 The circuit which is used to smooth the output voltage of the full-wave rectification is known as
A. transformer
B. rectifier
C. filter
D. none of these
9 In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
10 Conversion of alternating current into direct current is called
A. amplification
B. rectification
C. conduction
D. polarization

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