ECAT Pre Computer Science Chapter 16 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 16 Alternating Current

Try The MCQ's Test For ECAT Physics Chapter 16 Alternating Current

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ECAT Physics Chapter 16 Alternating Current

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Question # 1

The value of current gain of n-p-n transistor is of the order of

Question # 2

The sum of positive and negative peak values is called:

Question # 3

At resonance frequency the impedance of parallel resonance circuit is

Question # 4

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

Question # 5

At higher frequency of the alternating current, the capacitive reactance Xc

Question # 6

SI unit of impedance is

Question # 7

In RLC series circuit, resonance occurs when

Question # 8

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

Question # 9

The magnitude of alternative voltage V:

Question # 10

For a n-p-n transistor, the conventional current equation can be written as

Question # 11

Mathematical manipulation of the two quantized states can be best carried if they are represented by

Question # 12

Which of the following diodes can operate in the reverse biased condition

Question # 13

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

Question # 14

If we connect a A.C. volt meter to read A.C. voltage, It would read its:

Question # 15

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

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current
A. Decreases
B. Increases
C. Does not change
D. Momentarily goes to zero
2 A resonance curve for RLC series circuit is a plot of frequency versus
A. Voltage
B. Current
C. Impedance
D. Reactance
3 A P-N juction or semiconductor diode cannot be used as
A. A rectifier
B. Detector
C. Oscillator
D. An amplifier
4 When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency
A. 9.4 kHz
B. 940 kHz
C. 94 kHz
D. None 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 Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:
A. Peak value
B. RMS value
C. Instantaneous value
D. Peak-to-peak value
7 The RMS value of alternating current is:
A. 0.7 times at the peak value
B. 0.5 times the peak value
C. 0.7 times the Instantaneous value
D. Equal to maximum voltage
8 In half wave rectification
A. both halves of the input voltage is used
B. only one half of the input voltage is used
C. either of these
D. none of these
9 The bridge circuit of full wave rectification uses
A. one diode
B. two diode
C. three diode
D. four diode
10 A diode characteristic curve is a plot between
A. current and time
B. voltage and time
C. voltage and current
D. forward voltage and reversed voltage

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