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

In RLC series circuit, resonance occurs when

Question # 2

In half wave rectification

Question # 3

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

Question # 4

Most OP-AMP operates with

Question # 5

The highest value reached by the voltage or current:

Question # 6

Transmitting antenna emits

Question # 7

Which of the following has a great concentration of impurity

Question # 8

When the pn-junction is in reversed biased, current flows through the junction due to the

Question # 9

Which one of the following is correct?

Question # 10

Which one of the following waves belongs to electromagnetic spectrum

Question # 11

To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance

Question # 12

The power factor of resonant series circuit is

Question # 13

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

Question # 14

The value of the potential difference across the depletion region for the case of germanium is

Question # 15

The closed loop gain of the inverting amplifier is written as

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 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
2 Average value of A.C voltage during one cycle is
A. 1
B. Zero
C. Maximum
D. Variable
3 The phase angle of a series RLC circuit at resonance is
A. 180°
B. 90°
C. 0°
D. None of the these
4 The most common source of alternating voltage is:
A. Motor
B. Transformer
C. AC genrator
D. Both (A) and (C)
5 In n-p-n transistor, emitter base junction is kept
A. reversed
B. forward biased
C. may be reversed or may be forward biased
D. none of these
6 An A.C varies as a function of
A. Current
B. Voltage
C. Time
D. Charge
7 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
8 The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
A. zero
B. infinity
C. one
D. any one of these
9 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
10 The sum of positive and negative peak values is called:
A. Instantaneous value
B. Peak value
C. Rms valuie
D. Peak-to peak-value

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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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