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PHYSICS 2nd Year MCQs Chapter No.5 ALTERNATING CURRENT Online MDCAT & ECAT Preparation Test No.1

Physics MCQs 2nd Year Chapter No.5 ALTERNATING CURRENT Test No.1, FSc, Grade 12, Second Year Multiple Choice Questions, Medical College ( MDCAT ) , ECAT & University Admission Entry Test Exams Online Preparation, Chapter Wise Questions Answers Quiz Notes in Pdf Download, All Old Board Papers included, All Queries reply within 24 Hours. Click here to Contact us for any Query/Question regarding Exams.

PHYSICS 
Chapter Name : Alternating Current 
Chapter No. 5  [Test No.1]
2nd Year
Multiple Choice Questions

 








Book Name :  PHYSICS
Chapter No. 5 (Test No.1)
Chapter Name : Alternating Current 
Total MCQ from Text Book :  99
Book Version  :
2022

Published By : Punjab Text Book Board Lahore
Approved By : Govt of the Punjab and Federal Ministry for Education
Test Type : MCQ’s
Exam conduct By : Inter Boards of Sindh, KPK, Balochistan, AJK, Gilgit Baltistan, Punjab & Federal
Class / Grade  : 12 ( F.Sc. Intermediate)
Total Marks : 99
Total Time :   99 minutes
10

GRADE 12 - PHYSICS CHAPTER NO.5 ALTERNATING CURRENT Test No.1

GRADE 12 - PHYSICS CHAPTER NO.5 ALTERNATING CURRENT Test No.1

1 / 99

The reactance of a capacitor at 50Hz is 10 Ohm Which of the following will be its reactance at 100 Hz?

2 / 99

For frequency modulated signal, the frequency of the modulated carrier wave is at its normal value when the signal amplitude is at its

3 / 99

High frequency radio wave is called as:-.

4 / 99

Electromagnetic waves are, generated when

5 / 99

AC can be converted into DC by:

6 / 99

In the modulation process, low, frequency signal is called

7 / 99

Which of the following radiations forms the part of electromagnetic spectrum?

8 / 99

When electrons in a transmitting antenna vibrate 94000 times each having frequency:

9 / 99

The power factor of an A.C circuit has.

10 / 99

In pure RLC circuit, the energy is dissipated in:

11 / 99

The phase difference between current and voltage in an Inductive circuit is

12 / 99

The sum of positive and negative peak value is called

13 / 99

In three phase A.C supply coils are inclined at an angle of

14 / 99

The peak value of A.C is 2?2 A Which of the following will be its apparent value?

15 / 99

The frequency modulation (F.M.) transmission, frequencies range from

16 / 99

The sum of positive and negative peak values is called:

17 / 99

The amplitude modulated transmission waves have frequencies range:

18 / 99

Electromagnetic waves emitted from radio antenna are:

19 / 99

The phase angle between the voltage and current through resistor is:

20 / 99

Phase difference between V and I of an A. C through resistor is

21 / 99

At resonance frequency, the impedance of RLC series circuit is:

22 / 99

The effective value of A.C in a circuit is 10A Which of the following will be its peak value.

23 / 99

For frequency modulated signal, the frequency of the modulated carrier wave is highest when the signal amplitude is at its

24 / 99

AC voltmeter measure

25 / 99

The reactance of an inductor is

26 / 99

The phase angle at +vc (positive) peak is

27 / 99

Dimensions of RC matches with

28 / 99

The frequency of the range 20 to.20,000 Iii is:

29 / 99

In alternating current, Inductors behave like

30 / 99

Waves we prefer for transmission of radio signals have

31 / 99

100 μf capacitor is connected to an AC-voltage of 24 V and frequency of 50 Hz. The reactance of the capacitor is

32 / 99

In R-L series circuit phase angle is given by

33 / 99

The opposition offered by a capacitor.to the flow of an A. C is called

34 / 99

The frequency of AC in Pakistan is;

35 / 99

The impedance. Of RLC series circuit at, resonance is equal to;

36 / 99

Power factor is equal to:

37 / 99

In our radio receiver set, when we change station, or change the frequency we actually adjust the :due of

38 / 99

The flow of D.C. current is opposed by

39 / 99

The power factor in wattles current is

40 / 99

In RLC series circuit at resonance the phase difference between capacitor and inductor reactance's is:

41 / 99

Choke consumes extremely small:

42 / 99

The frequency of electromagnetic waves received through a LC - circuit is adjusted by

43 / 99

Impedance Z can he expressed as;

44 / 99

The amplitude modulation (A.M.) transmission, frequencies range from

45 / 99

A.C. through inductor, the applied voltage:

46 / 99

Power dissipated in pure inductor is:

47 / 99

The wire receiving the waves is known as

48 / 99

The range or F.M transmission frequencies is from

49 / 99

The frequency range. for F.M is given by

50 / 99

For frequency modulated signal, the frequency of the modulated carrier wave is lowest when the signal amplitude is at its

51 / 99

The velocity of an oscillating charge as it moves to and fro along the wire is

52 / 99

The piece of wire through which charges are made to accelerate by mean o me waves is known as

53 / 99

The combined effect of resistance and reactance is known as:

54 / 99

The speed of electromagnetic wave in vacuum is given by

55 / 99

During each cycle AC voltage reaches a peak value

56 / 99

In RLC parallel circuit the resonance frequency is

57 / 99

In the modulation process, high frequency signal is called

58 / 99

If E and B be electric and magnetic field vectors of an electromagnetic wave, Then propagation of wave then propagation of wave is along the direction of

59 / 99

Electromagnetic waves transport

60 / 99

In RIC series circuit Xl=Xc Which of the following will be the power factor?

61 / 99

The velocity of an oscillating charge as it moves to and fro along a wire is:

62 / 99

The power factor of RL-series circuit is :

63 / 99

In an electromagnetic waves, the electric and magnetic field are:

64 / 99

In tuning circuit if capacitance is doubled and inductance is halved then its frequency

65 / 99

Choke coil in A.C circuit is used for

66 / 99

Which of the following is the time taken by an A.C of frequency 50 Hz to complete one cycle?

67 / 99

The highest value reached by the Voltage or current in one cycle is called;

68 / 99

The range of values of power factor is

69 / 99

When we accelerate the charges, which type of waves are produced.

70 / 99

The basic circuit element in a D.0 circuit which controls the current and voltage is

71 / 99

Electromagnetic waves do not transport any:

72 / 99

At high frequency the value of reactance of capacitor will he

73 / 99

Which of the following electromagnetic waves have shortest wavelength?

74 / 99

Main reasons for worldwide use of A. C is

75 / 99

In R-L-C Circuit, the energy is dissipated in:

76 / 99

The frequency of A.C. source used in Pakistan is;

77 / 99

The waveform of alternating voltage is a:

78 / 99

Modulation can be achieved by

79 / 99

The process of combining the low frequency signal with a high frequency signal is called

80 / 99

Capacitive reactance Xc =

81 / 99

In a pure inductive A.C. circuit the current

82 / 99

Which one is not present in AC generator?

83 / 99

In three phase AC generator the phase difference between each pair of coil is:

84 / 99

The peak value of A.C source is 20 A, then its rrms value will be:

85 / 99

An electric bulb is designed to operate at 12V DC. It is connected to AC and gives same brightness then peak AC value of voltage is

86 / 99

The sharpness of resonance RLC series resonant circuit, as the resistance of the circuit is increased,

87 / 99

Average value of current and voltage over a complete cycle is

88 / 99

Direct current cannot flow through:

89 / 99

The mean value of A.C. in a cycle is :

90 / 99

The slope of q-t curve at any instant of time gives:

91 / 99

AN inductor may store energy in:

92 / 99

At resonance frequency, the impedance of RLC - Parallel Circuit is

93 / 99

The reactance Of capacitor is equal to

94 / 99

As a result of modulation, the resulting wave is called

95 / 99

The most common source of A.C is:

96 / 99

In case of capacitor, the unit of reactance is:

97 / 99

In Pakistan, the frequency of A.C. supply is :

98 / 99

Direct current cannot flow through

99 / 99

Choke used to limit high frequency A.C has

Your score is

The average score is 26%

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