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

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

Question # 2

Transmitting antenna emits

Question # 3

During each cycle, alternating voltage reaches a peak value

Question # 4

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

Question # 5

The Instantaneous value of alternative current maybe:

Question # 6

The phase at the positive peak of an A.C. cycle is:

Question # 7

The basic circuit elements of A.C circuit are

Question # 8

The emitter-base junction of a transistor is forward-biased and collector-base junction is reverse-biased. If the base current is increased, its

Question # 9

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

Question # 10

Average value of A.C voltage during one cycle is

Question # 11

For normal operation of transistor, the batteries

Question # 12

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

Question # 13

When the emitter-base junction of a transistor is reverse biased, collector current

Question # 14

When the pn-junction is in reversed biased, current flows through the junction due to the

Question # 15

An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 When a transistor is used as a switch the circuit in which the current is to be switched OFF and ON, is connected between the
A. base and emitter
B. collector and emitter
C. base and collector
D. any one of these
2 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
3 When either L or C is increased, the resonant frequency of the RLC series circuit
A. Increases
B. Decreases
C. Remains the same
D. Becomes zero
4 The emitter-base junction of a transistor is forward-biased and collector-base junction is reverse-biased. If the base current is increased, its
A. Icwill decrease
B. VCEwill increase
C. ICwill increase
D. VCCwill increase
5 During each cycle, alternating voltage reaches a peak value
A. One time
B. Two times
C. Four times
D. A number of times depending on the frequency
6 Transmitting antenna emits
A. Magnetic waves
B. Electric waves
C. Electromagnetic waves
D. Sound waves
7 The amplifier which us used to perform mathematical operations electronically is known as
A. calculator
B. OP-AMP
C. computer
D. any one of them
8 Which one of the following is correct?
A. Vo= 1.414 Vrms
B. Iams= 1.414 Io
C. VO = 10.70 Vrms
D. Both a and b
9 The bridge circuit of full wave rectification uses
A. one diode
B. two diode
C. three diode
D. four diode
10 The open loop gain of OP-AMP is of the order of
A. 102
B. 103
C. 104
D. 105

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