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.

A is correct but R is wrong

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

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

A is wrong but R is correct

A is correct but R is wrong

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

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

A is wrong but R is correct

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Communication Systems
When the length of antenna is a whole wavelength

The radiation at right angles is maximum

The radiation is zero in all directions

The radiation is maximum in all directions

The radiation at right angles is zero

The radiation at right angles is maximum

The radiation is zero in all directions

The radiation is maximum in all directions

The radiation at right angles is zero

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Communication Systems
For a plate-modulated class C amplifier the plate supply voltage is E. The maximum plate cathode voltage could be almost high as

6E

3E

2E

4E

6E

3E

2E

4E

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Communication Systems
In Pulse Code Modulation system

Suffers from the disadvantage of its incompatibly with TDM

Large bandwidth is required

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

Quantising noise can be overcome by companding

Suffers from the disadvantage of its incompatibly with TDM

Large bandwidth is required

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

Quantising noise can be overcome by companding

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Communication Systems
DVD uses

Laser beam for recording and video head for playback

Video head for recording and laser beam for playback

None of these

Laser beam for both recording and playback

Laser beam for recording and video head for playback

Video head for recording and laser beam for playback

None of these

Laser beam for both recording and playback

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Communication Systems
If output power of a radio receiver is doubled, its volume is increased by __________ dB.

3

1

-3

2

3

1

-3

2

ANSWER DOWNLOAD EXAMIANS APP

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 When the length of antenna is a whole wavelength

Communication Systems For a plate-modulated class C amplifier the plate supply voltage is E. The maximum plate cathode voltage could be almost high as

Communication Systems In Pulse Code Modulation system

Communication Systems DVD uses

Communication Systems If output power of a radio receiver is doubled, its volume is increased by __________ dB.

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
When the length of antenna is a whole wavelength

Communication Systems
For a plate-modulated class C amplifier the plate supply voltage is E. The maximum plate cathode voltage could be almost high as

Communication Systems
In Pulse Code Modulation system

Communication Systems
DVD uses

Communication Systems
If output power of a radio receiver is doubled, its volume is increased by __________ dB.