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

Chock consumes externally small

Question # 2

The phase angle of a series RLC circuit at resonance is

Question # 3

Alternating current is produced by a voltage source which polarity:

Question # 4

When either L or C is increased, the resonant frequency of the RLC series circuit

Question # 5

Electromagnetic waves transmit energy equal to

Question # 6

In a normally biased n-p-n transistor, an electron c current IEflows from the

Question # 7

The open loop gain of OP-AMP is of the order of

Question # 8

In free space, the speed of electromagnetic waves is

Question # 9

For the normal operation of the transistor, its

Question # 10

Nowadays, Most of the electric energy is produced by the A.C. generators using:

Question # 11

During the positive half-cycle in the half-wave rectification,the diode

Question # 12

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

Question # 13

The R1= infinity and R2= 0, then the gain of non-inverting amplifier is

Question # 14

In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.

Question # 15

A sinusoidally alternating voltage or current can be graphically represented by a:

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The basic circuit element in D.C. circuit is:
A. A capacitor
B. A resistor
C. An inductor
D. Both (A) and (C)
2 The value of current gain of n-p-n transistor is of the order of
A. tens
B. hundreds
C. thousands
D. ten thousands
3 The highest value reached by the voltage or current:
A. In quarter cycle is called Instantaneous value
B. In half cycle is called peak-to-peak value
C. In one cycle is called peak value
D. In half cycle is called Instantaneous value
4 A P-N juction or semiconductor diode cannot be used as
A. A rectifier
B. Detector
C. Oscillator
D. An amplifier
5 Peak value of alternative current is:
A. one of its Instantaneous value
B. Equal to its RMS value
C. The same as its peak-to-peak value
D. Both (B) and (C)
6 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
7 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
8 The value of output resistance of OP-AMOP is of the order of
A. few ohms
B. few hundred ohms
C. several kilo ohms
D. several mega ohms
9 In series RC circuit when R=Xc, then the phase angle is
A. 0°
B. 90°
C. 70°
D. 45°
10 An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is
A. 3525.0 volts
B. 35.35 volts
C. 353.5 volts
D. 3.535 volts

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