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

Question # 2

Transmitting antenna emits

Question # 3

Most OP-AMP operates with

Question # 4

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

Question # 5

The power factor of resonant series circuit is

Question # 6

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

Question # 7

Which one of the following waves belongs to electromagnetic spectrum

Question # 8

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

Question # 9

The basic circuit elements of A.C circuit are

Question # 10

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

Question # 11

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

Question # 12

At resonance frequency the impedance of parallel resonance circuit is

Question # 13

Conversion of alternating current into direct current is called

Question # 14

A P-N juction or semiconductor diode cannot be used as

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 In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
2 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
3 Alternating current can induce voltage because it has a
A. High peak value
B. Varying magnetic field
C. Stronger field than direct curren
D. Constant magnetic field
4 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
5 When the p-n junction is forward biased its resistance is of the order of
A. few mega ohms
B. few kilo ohms
C. few ohms
D. few milli ohms
6 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
7 The impedance of RLC series resonance circuit at resonant frequency is
A. Greater than R
B. Equal to R
C. Less than R
D. None 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 The value of output resistance of OP-AMOP is of the order of
A. few ohms
B. few hundred ohms
C. several kilo ohms
D. several mega ohms
10 The input resistance of the OP-AMP is the resistance between the
A. (-) input and output
B. (+) input and output
C. (-) and (+) inputs
D. between any inputs

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