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

Most OP-AMP operates with

Question # 2

Alternating current can induce voltage because it has a

Question # 3

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

Question # 4

The phase angle of a series RLC circuit at resonance is

Question # 5

The value of the potential difference across the depletion region for the case of germanium is

Question # 6

Alternating current is produced by a voltage source which polarity:

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

The magnitude of alternative voltage V:

Question # 11

The basic circuit elements of A.C circuit are

Question # 12

Alternating current can be transmitted:

Question # 13

Conversion of alternating current into direct current is called

Question # 14

The closed loop gain of the non-inverting amplifier is given by

Question # 15

The total reactance of a series RLC circuit at resonance is

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 An A.C varies as a function of
A. Current
B. Voltage
C. Time
D. Charge
2 Alternating current can be transmitted:
A. To long distance
B. At very high cost
C. At very low cost
D. Both (A) and (C)
3 The phase at the positive peak of an A.C. cycle is:
A. 0º

B. 90º

C. 180º

D. 0 andᏘ
4 The magnitude of alternative voltage V:
A. Always increase
B. Always decrease
C. Remains constant
D. Does not remain constant
5 The value of current gain of n-p-n transistor is of the order of
A. tens
B. hundreds
C. thousands
D. ten thousands
6 Which of the following has a great concentration of impurity
A. base
B. emitter
C. collector
D. none of these
7 The bridge circuit of full wave rectification uses
A. one diode
B. two diode
C. three diode
D. four diode
8 When the pn-junction is connected reversed biased, its resistance is of the order of
A. few ohms
B. few kilo-ohms
C. few mega-ohms
D. few mili-ohms
9 For a n-p-n transistor, the conventional current equation can be written as
A. IE+ IC= IB
B. IC- IB= IE
C. IC+ IB= IE
D. IB+ IE= IC
10 At resonance frequency the impedance of parallel resonance circuit is
A. Maximum
B. Minimum
C. Zero
D. None of the above

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