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

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

Question # 2

In an A.C circuit with resistor only, the current and voltage have a phase angle of

Question # 3

The basic circuit elements of A.C circuit are

Question # 4

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

Question # 5

Mathematical manipulation of the two quantized states can be best carried if they are represented by

Question # 6

The average of A.C. current and voltage over a complete cycle is

Question # 7

At resonance frequency the impedance of parallel resonance circuit is

Question # 8

Alternating current can induce voltage because it has a

Question # 9

The phase angle of a series RLC circuit at resonance is

Question # 10

The magnitude of alternative voltage V:

Question # 11

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

Question # 12

In half wave rectification

Question # 13

The wave form of alternating voltage is the graph between:

Question # 14

If the value of C in a series RLC circuit is increased, the resonant frequency

Question # 15

The value of the potential difference across the depletion region for the case of germanium 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 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 For normal operation of transistor, the batteries
A. VCCis of much lower value than VBB
B. VCCis of much higher value than VBB
C. VCC is equal toVBB
D. none of these
4 The bridge circuit of full wave rectification uses
A. one diode
B. two diode
C. three diode
D. four diode
5 The basic circuit elements of A.C circuit are
A. Resistor
B. Inductor
C. Capacitor
D. All the three
6 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
7 During the positive half-cycle in the half-wave rectification,the diode
A. does not conduct
B. conducts
C. either of these
D. neither of these
8 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
9 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
10 If 250V is the RMS value of alternative voltage, then its peak value Vowill be:
A. 353.5V
B. 250V
C. 175V
D. zero

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