12th Class Physics Chapter 16 Alternating Current Preparation Online Test

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.#	Question	Answer
1	In AC system we generate sine wave form because:	A. It san be easily draw B. It produces least disturbance in electrical circuits C. It is nature standard D. Other waves cannot be produced easily
2	The phase difference between the current and voltage at resonce is:	A. 0 B. π C. -π D. π/2
3	The AC system is preferred to DC system because:	A. AC voltage can be easily changed in magnitude B. DC motor angular velocity is affected badly C. High voltage AC transmission is less efficient D. Domestic appliance require AC voltage for their operation
4	The velocity of an oscillating charge as it moves to and fro along a wire is.	A. Changing B. Constant C. Infinite D. zero
5	The phase difference between current and voltage in an inductive circuit is.	A. zero B. 90 ^o C. 180 ^o D. 45^o
6	An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:	A. 50 Hz B. 25Hz C. 100 Hz D. 75 Hz
7	In an LRC circiut, the capacitance is made one-fourth, when an resonance . Then what should be change in inductance, so that the circuit remain in resonance?	A. 4 times B. 1/4 times C. 8 times D. 2 times
8	The basic circuit element in A.C. circuit which controls current.	A. Resistor only B. Capacitor only C. Inductor only D. All of these
9	Which consumes small power.	A. Inductor B. Resistor C. Motor D. All of these
10	The most common source of an A.C. Voltage is.	A. Motor B. Cell C. Generator D. Thermo couple

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Second Year Physics Chapter 16 Online MCQ Test for 2nd Year Physics Chapter 16 Alternating Current Preparation

FSC Part 2 Physics Chapter 16 Test

FSC Part 2 Physics Chapter Wise Test (English Medium)

MCQ's Test For Chapter 0 "Physics FSC Part 2 Chapter 16 Online MCQ's Test"

Physics FSC Part 2 Chapter 16 Online MCQ's Test

The phase difference between the current and voltage at resonce is:

The reactance is the ratio of

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

Power dissipated in a pure inductor is.

In three phase A.C. generator the phase difference between each pair of coil is.

If Io is the peak value of current, then its root mean square value is given by

Direct current can not flow through.

An in cudutor may store energy in

The device which allows only the flow of D.C. is.

The wave form of alternating voltage is a

The main reason for world wide use of A.C is because:

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

If Vrms be the root mean square value of emf then its peak to peak value is given by

Power dissipation in A.C circuit is expressed as:

Which consumes small power.

In RLC circuit the energy is dissipated in

During each cycle A.C. voltage reaches a peak value.

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FSC Part 2 Physics Chapter 16 Online Test MCQ's

Top Scorers Of Chapter 0 "Physics FSC Part 2 Chapter 16 Online MCQ's Test" MCQ`s Test

FSc Part II Physics Chapter 0 Important MCQ's

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FSC Part 2 Physics
Chapter 16 Test

FSC Part 2 Physics Chapter Wise Test
(English Medium)

If I_o is the peak value of current, then its root mean square value is given by

If V_rms be the root mean square value of emf then its peak to peak value is given by