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

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

Question # 2

The highest value reached by the voltage or current:

Question # 3

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

Question # 4

The basic circuit elements of A.C circuit are

Question # 5

Alternating current can be transmitted:

Question # 6

Average value of A.C voltage during one cycle is

Question # 7

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

Question # 8

The magnitude of alternative voltage V:

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

In frequency modulation (FM), the carrier waves amplitude

Question # 13

The wave form of alternating voltage is the graph between:

Question # 14

The output voltage of half wave rectification is in the form of

Question # 15

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

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 At resonance, the impedance of RLC series circuit is
A. Maximum
B. Zero
C. Minimum
D. Determinate
2 In a normally biased n-p-n transistor, an electron c current IEflows from the
A. emitter into the base
B. collector into the base
C. base into collector
D. none of these
3 Electromagnetic waves transmit energy equal to
A. 1/2 mv2
B. moc2
C. hf/c
D. hf
4 The output voltage of half wave rectification is in the form of
A. a smooth curve
B. a smooth wave
C. pulses
D. all of the above
5 During the negative half-cycle of the half-wave rectification, the diode
A. does not conduct
B. conducts
C. either of these
D. none of these
6 The total reactance of a series RLC circuit at resonance is
A. zero
B. Equal to the resistance
C. Infinity
D. Capacitive
7 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
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 An A.C varies as a function of
A. Current
B. Voltage
C. Time
D. Charge
10 In RLC series circuit, resonance occurs when
A. XL > Xc
B. XL < Xc
C. XL = Xc
D. None of these

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