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

In half wave rectification

Question # 2

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

Question # 3

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

Question # 4

For the normal operation of the transistor, its

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

The impedance of RLC series resonance circuit at resonant frequency is

Question # 10

Which of the following has a great concentration of impurity

Question # 11

The RMS value of alternating current is:

Question # 12

In series RC circuit when R=Xc, then the phase angle is

Question # 13

During the positive half-cycle in the half-wave rectification,the diode

Question # 14

SI unit of impedance is

Question # 15

In frequency modulation (FM), the carrier waves amplitude

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 The total reactance of a series RLC circuit at resonance is
A. zero
B. Equal to the resistance
C. Infinity
D. Capacitive
4 When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency
A. 9.4 kHz
B. 940 kHz
C. 94 kHz
D. None of these
5 In describing functions of digital systems, a closed switch will be shown as
A. 0
B. 1
C. low
D. any one of these
6 The bridge circuit of full wave rectification uses
A. one diode
B. two diode
C. three diode
D. four diode
7 The entire wave form of sinusoidal voltage is actually a set of all the:
A. Positive maximum value + Voand negative maximum value -Vo
B. Posiotive maximum value +Vo and zero
C. Zero and negative maximum value -Vo
D. Any of these
8 SI unit of impedance is
A. hertz
B. henry
C. ampere
D. ohms
9 OP-AMP has the following input terminals
A. one
B. two
C. three
D. four
10 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

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