Question # 1

In three phase voltage across any two lines is about.

Choose an answer

220 V

230 V

400 V

430 V

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

Choose an answer

Voltage

Current

Charge

Botha a and b

The peak value of alternating current is 5√2 A. The mean square value of current will be:

Choose an answer

5A

2.5A

5√2A

5²

In case of A.C. through resistor V and I are

Choose an answer

At 0^o with each other

At 180 ^o with each other

At 90^o with each other

At 270 ^o with each other

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

Choose an answer

14.1 A

10 A

20 A

28.2 A

Power dissipation is a pure inductive or in a pure capacitance circuit is:

Choose an answer

10⁶

0

10^∘

Maximum

The circuit in which current and voltage are in phase, the power factor is:

Choose an answer

Zero

1

-1

2

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

Choose an answer

0

π

-π

π/2

At high frequency the value of reactance of capacitor will be.

Choose an answer

Small

Zero

Large

Infinite

when an inductor comes close to a metallic object, its inductance is.

Choose an answer

Decreased

Increased

Becomes half

Becomes 4 times

For electromagnetic waves, Maxwell generalized

Choose an answer

Gauses law for magnetism

Gauses law for eletricity

Fradays law

Amperes law

The highest value reached by the voltage or current is one cycle is called:

Choose an answer

Peak to peak value

Peak value

Instantaneous value

Root mean square value

An A.C. voltmeter reads 220 V, its peak value will be

Choose an answer

225 V

240 V

311.12 V

300 V

The peak to peak value of alternating voltage is

Choose an answer

2V_o

V_o

None of these

In Series resonance circuit the impedance of circuit art resonance frequency, is

Choose an answer

Maximum

Minimum

It is unequal to R

None of above

X_L=

Choose an answer

2πfL

1/2πfL

2πfL

fL/2π

The wave form of alternating voltage is a

Choose an answer

Cotangent curve

Cosine curve

Sine curve

Tangent curve

More Classes

Other Links

Physics Fsc Part 2 Chapter 5 Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer