Assertion (A): In FM the frequency of the carrier is varied by the modulating voltageReason (R): FM and PM are two forms of angle modulation.

Communication Systems
Assertion (A): In FM the frequency of the carrier is varied by the modulating voltageReason (R): FM and PM are two forms of angle modulation.

Both A and R are correct and R is correct explanation of A

A is wrong but R is correct

Both A and R are correct but R is not correct explanation of A

A is correct but R is wrong

Both A and R are correct and R is correct explanation of A

A is wrong but R is correct

Both A and R are correct but R is not correct explanation of A

A is correct but R is wrong

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Communication Systems
Which of the following is used to generate PDM?

Monostable multi-vibrator

Free running multi-vibrator

JK flip-flop

Schmitt trigger

Monostable multi-vibrator

Free running multi-vibrator

JK flip-flop

Schmitt trigger

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Communication Systems
What is the purpose of peak clipper circuits in radio transmitters?

To increase bandwidth

To prevent overmodulation

To regulate oscillator I/P voltage

To reduce bandwidth

To increase bandwidth

To prevent overmodulation

To regulate oscillator I/P voltage

To reduce bandwidth

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Communication Systems
The direction of rotation of a CD is

Anticlockwise

Mostly anticlockwise but some times clockwise

Clockwise

Clockwise or anticlockwise depending on frequency of data stored

Anticlockwise

Mostly anticlockwise but some times clockwise

Clockwise

Clockwise or anticlockwise depending on frequency of data stored

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Communication Systems
In Pulse Code Modulation system

Quantising noise can be reduced by decreasing the number of standard levels

Large bandwidth is required

Suffers from the disadvantage of its incompatibly with TDM

Quantising noise can be overcome by companding

Quantising noise can be reduced by decreasing the number of standard levels

Large bandwidth is required

Suffers from the disadvantage of its incompatibly with TDM

Quantising noise can be overcome by companding

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Communication Systems
In Modulation, “carrier” is

Speech voltage to be transmitted

Voltage for which frequency, phase or amplitude is varied

Voltage with constant frequency, phase or amplitude

Resultant wave

Speech voltage to be transmitted

Voltage for which frequency, phase or amplitude is varied

Voltage with constant frequency, phase or amplitude

Resultant wave

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Communication Systems

Communication Systems Assertion (A): In FM the frequency of the carrier is varied by the modulating voltageReason (R): FM and PM are two forms of angle modulation.

Communication Systems Which of the following is used to generate PDM?

Communication Systems What is the purpose of peak clipper circuits in radio transmitters?

Communication Systems The direction of rotation of a CD is

Communication Systems In Pulse Code Modulation system

Communication Systems In Modulation, “carrier” is

Communication Systems
Assertion (A): In FM the frequency of the carrier is varied by the modulating voltageReason (R): FM and PM are two forms of angle modulation.

Communication Systems
Which of the following is used to generate PDM?

Communication Systems
What is the purpose of peak clipper circuits in radio transmitters?

Communication Systems
The direction of rotation of a CD is

Communication Systems
In Pulse Code Modulation system

Communication Systems
In Modulation, “carrier” is