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

If 250V is the RMS value of alternative voltage, then its peak value Vowill be:

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

The R1= infinity and R2= 0, then the gain of non-inverting amplifier is

Question # 6

Transmitting antenna emits

Question # 7

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

Question # 8

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

Question # 9

Electromagnetic waves transmit energy equal to

Question # 10

In describing functions of digital systems, a closed switch will be shown as

Question # 11

OP-AMP has the following input terminals

Question # 12

Alternating current can induce voltage because it has a

Question # 13

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

Question # 14

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

Question # 15

The highest value reached by the voltage or current:

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The magnitude of alternative voltage V:
A. Always increase
B. Always decrease
C. Remains constant
D. Does not remain constant
2 The basic circuit element in A.C. circuits are:
A. Resistor and capacitor
B. Resistor and Inductor
C. Capacitor only
D. Both (B) and (C)
3 In a transistor, if the central region is p-type then this type of transistor is known as
A. p-n-p transistor
B. n-p-n transistor
C. either of these
D. none of these
4 In which of the following components, pn-junction is used
A. light emitting diode
B. photo diode
C. photo voltaic cell
D. all of these
5 The circuit which is used to smooth the output voltage of the full-wave rectification is known as
A. transformer
B. rectifier
C. filter
D. none of these
6 Chock consumes externally small
A. Charge
B. Current
C. Power
D. Potential
7 Which of the following diode is used to derive the current in external circuit when light is incident in the circuit
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
8 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
9 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
10 A resonance curve for RLC series circuit is a plot of frequency versus
A. Voltage
B. Current
C. Impedance
D. Reactance

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