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

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

Question # 2

The alternative voltage of current is actually measured by:

Question # 3

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

Question # 4

Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is

Question # 5

Chock consumes externally small

Question # 6

The value of output resistance of OP-AMOP is of the order of

Question # 7

Electromagnetic waves transmit energy equal to

Question # 8

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

Question # 9

The output voltage of half wave rectification is in the form of

Question # 10

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

Question # 11

When the pn-junction is connected reversed biased, its resistance is of the order of

Question # 12

When the pn-junction is forward biased. the current flows through it is of the order of

Question # 13

The wave form of alternating voltage is the graph between:

Question # 14

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

Question # 15

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

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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 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
3 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
4 SI unit of impedance is
A. hertz
B. henry
C. ampere
D. ohms
5 During the negative half-cycle of the half-wave rectification, the diode
A. does not conduct
B. conducts
C. either of these
D. none of these
6 At resonance frequency the impedance of parallel resonance circuit is
A. Maximum
B. Minimum
C. Zero
D. None of the above
7 The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
A. zero
B. infinity
C. one
D. any one of these
8 In describing functions of digital systems, a closed switch will be shown as
A. 0
B. 1
C. low
D. any one of these
9 If the value of C in a series RLC circuit is increased, the resonant frequency
A. Is not affected
B. Increase
C. Remains the same
D. Decreases
10 The average of A.C. current and voltage over a complete cycle is
A. Maximum
B. zero
C. Neither zero nor maximum
D. None of these

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