ECAT Pre General Science Physics Chapter 16 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 16 Alternating Current

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

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ECAT Pre General Science Physics Chapter 16 Alternating Current

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Question # 1

The entire wave form of sinusoidal voltage is actually a set of all the:

Question # 2

A digital system deals with quantities or variables which have

Question # 3

The basic circuit element in D.C. circuit is:

Question # 4

The value of the input resistance of OP-AMP is of the order of

Question # 5

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

Question # 6

The power factor of resonant series circuit is

Question # 7

At resonance, the phase angle for RLC series resonance circuit equals

Question # 8

If we connected the ordinary DC ammeter to measure alternating current, it would measure its:

Question # 9

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

Question # 10

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

Question # 11

In which of the following components, pn-junction is used

Question # 12

An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current

Question # 13

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

Question # 14

The bridge circuit of full wave rectification uses

Question # 15

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

Question # 16

Chock consumes externally small

Question # 17

At resonance frequency the impedance of parallel resonance circuit is

Question # 18

Transmitting antenna emits

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

When the p-n junction is forward biased its resistance is of the order of

Question # 25

In a transistor, the central region is called

Question # 26

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

Question # 27

Which of the following diode is used for the detection of light

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 Chock consumes externally small
A. Charge
B. Current
C. Power
D. Potential
2 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
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 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
5 The Instantaneous value of alternative current maybe:
A. The same as its RMS value
B. Greater than its Rms value
C. The same as its peak value
D. Any of these
6 An A.C varies as a function of
A. Current
B. Voltage
C. Time
D. Charge
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 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
9 The sum of positive and negative peak values is called:
A. Instantaneous value
B. Peak value
C. Rms valuie
D. Peak-to peak-value
10 Which one of the following waves belongs to electromagnetic spectrum
A. Radio and TV waves
B. Radar waves
C. Micro waves
D. All of them

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