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

When either L or C is increased, the resonant frequency of the RLC series circuit

Question # 2

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

Question # 3

The most common source of alternating voltage is:

Question # 4

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

Question # 5

A resonance curve for RLC series circuit is a plot of frequency versus

Question # 6

Chock consumes externally small

Question # 7

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

Question # 8

The bridge circuit of full wave rectification uses

Question # 9

In half wave rectification

Question # 10

Which one of the following waves belongs to electromagnetic spectrum

Question # 11

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

Question # 12

OP-AMP has the following input terminals

Question # 13

In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 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
2 The device which allows only the flow of an A.C. through a circuit is
A. Capacitor
B. Inductor
C. D.C. motor
D. Battery
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 In frequency modulation (FM), the carrier waves amplitude
A. Remains constant
B. Increase
C. Decreases
D. None of these
5 An A.C varies as a function of
A. Current
B. Voltage
C. Time
D. Charge
6 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
7 The wave form of alternating voltage is the graph between:
A. Voltage across X-axis and time across y-axis
B. Current and time
C. Voltage along y-axis and time along x-axis
D. Voltage and current
8 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
9 OP-AMP has the following input terminals
A. one
B. two
C. three
D. four
10 Conversion of alternating current into direct current is called
A. amplification
B. rectification
C. conduction
D. polarization

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