Question # 1

In frequency modulation, the amplitude of carrier waves is

Choose an answer

Increases

Remains constant

Decreases

None of these

In a pure inductive A.C. circuit the current.

Choose an answer

Lags behind voltage by 90 ^o

Leads the voltage by 90 ^o

In phase with voltage

Leads the voltage by 270 ^o

For electromagnetic waves, Maxwell generalized

Choose an answer

Gauses law for magnetism

Gauses law for eletricity

Fradays law

Amperes law

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

An alternating quantity (voltage or current) is completely known if we know its:

Choose an answer

Maximum

Frequency and phase

Effective value

Both (a) & (b)

The unit of impedance is.

Choose an answer

Henry

Hertz

Ampere

Ohm

The resonance frequency is given by:

Choose an answer

fr = 2π√LC

fr = 1/2πLC

fr = 1/ 2π√LC

f1 = 1/ 2πC√L

The wave form of alternating voltage is a

Choose an answer

Cotangent curve

Cosine curve

Sine curve

Tangent curve

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

Choose an answer

Voltage

Current

Charge

Botha a and b

In pure capacitor A.C. circuit, the current I and charge q are.

Choose an answer

In phase

Out of phase

Parallel to each other

None of above

The A.M. transmission frequencies range from

Choose an answer

540 KHz to 1000 KHz

540 Khz to 1600 KHz

520 KHz TO 1600 KHz

520 KHz TO 1400 KHz

Electron vibrating 94,000 times each second will produce radio waves of frequency.

Choose an answer

94 Hz

940 HZ

94 Hz

490 Hz

High frequency radio wave is called as

Choose an answer

Fluctuate

Carrier wave

Matter wave

Mechanical wave

The flow of D.C current is opposed by

Choose an answer

Resistor

Induction

Capacitor

All of these

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

Choose an answer

Changing

Constant

Infinite

zero

An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:

Choose an answer

50 Hz

25Hz

100 Hz

75 Hz

The circuit which compares the two voltages is.

Choose an answer

LDR

Sensor

Comparator

Logic gate

Radio frequency choke is

Choose an answer

Iron cored

Air Cored

Air as well as iron cored

None of these

More Classes

Other Links

Ics Part 2 Physics Chapter 5 Test Online 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

Choose an answer