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

Most OP-AMP operates with

Question # 2

Alternating current can induce voltage because it has a

Question # 3

The alternative voltage of current is actually measured by:

Question # 4

The length of rotating vector (on a certain scale) represents the:

Question # 5

Alternating current is produced by a voltage source which polarity:

Question # 6

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

Question # 7

The magnitude of alternative voltage V:

Question # 8

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

Question # 9

The impedance of RLC series resonance circuit at resonant frequency is

Question # 10

Electromagnetic waves transmit energy equal to

Question # 11

Average value of A.C voltage during one cycle is

Question # 12

During the negative half-cycle of the half-wave rectification, the diode

Question # 13

Conversion of alternating current into direct current is called

Question # 14

OP-AMP has the following input terminals

Question # 15

The value of output resistance of OP-AMOP is of the order of

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 In an A.C circuit with resistor only, the current and voltage have a phase angle of
A. 90°
B. 0°
C. 180°
D. none of these
2 The closed loop gain of the non-inverting amplifier is given by
A. G = R2/R1
B. G = -R2/R1
C. G = 1 - R2/R1
D. G = 1 + T2/R1
3 If 250V is the RMS value of alternative voltage, then its peak value Vowill be:
A. 353.5V
B. 250V
C. 175V
D. zero
4 Transmitting antenna emits
A. Magnetic waves
B. Electric waves
C. Electromagnetic waves
D. Sound waves
5 Nowadays, Most of the electric energy is produced by the A.C. generators using:
A. Hydal water
B. Geothermal energy
C. Solar energy
D. Biomass
6 Which of the following diode is used for the detection of light
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
7 The RMS value of alternating current is:
A. 0.7 times at the peak value
B. 0.5 times the peak value
C. 0.7 times the Instantaneous value
D. Equal to maximum voltage
8 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
9 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
10 In a transistor, the central region is called
A. collector
B. emitter
C. base
D. none of them

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  • Iiqra Fatima

    Iiqra Fatima

    25 May 2018

    You should let us practice difficult mcqs ..These are too easy for ECAT level....Thanku

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