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Q1. | Phase modulation is commonly-used for data transmission mainly because |

A. | phase can be varied from + 180° to 180° [Wrong Answer] |

B. | it is resistant to the effects of noise [Correct Answer] |

C. | demodulation is very easy [Wrong Answer] |

D. | it gives highest data rates that can be transmitted over a given channel [Wrong Answer] |

View Answer
Explanation:-
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**Also Read Similar Questions Below :**

⇒ If transmitted power is 75 kW, the field strength at 30 km distance will be about

10 V/m

1 V/m

50 mV/m

2 mV/m

⇒ State space analysis is applicable to

time invariant systems

time varying systems

both time invariant and time varying systems

none of the above

⇒ To ensure that only dominant mode TE

_{10}is allowed to propagate in an air filled rectangular waveguide, the lower frequency limit and upper frequency limit are

about 25% above

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*f*

*for TE*

_{c}_{20}mode respectively

about 50% above

*f*

*for TE*

_{c}_{10}and 25% below

*f*

*for TE*

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about 25% above

*f*

*for TE*

_{c}_{10}and 25% below

*f*

*for TE*

_{c}_{20}mode respectively

none of the above

⇒ If A = 3 +

*j*1 and B = 4 +

*j*3, A + B =

7 ∠45°

10 ∠45°

8.062 ∠29.7°

8.062 ∠73°

⇒ An amplitude modulated wave

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0.3

0.7

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⇒ In figure, D

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⇒ Frequency shift keying is used mostly in

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telephony

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radio transmission

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4

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⇒ The Causal system given below is _______

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minimum phase

mixed phase

none of these

⇒ A resistance wire strain gauge has gauge factor 2. If stress is 100 mega newton/m

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⇒ Which of the following statements is correct?

R-C is a dual pair

LC is a dual pair

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⇒ Radiation intensity in a given direction is the

energy radiated per square metre

power radiated per square metre

power radiated per unit solid angle in that direction

none of the above

⇒ Millman's theorem is the best to find

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equivalent voltage source

equivalent voltage and resistance of a circuit

none of the above

⇒ The disturbance from adjacent power lines is known as

cross talk

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⇒ Which of the following is a disadvantage of Vestigial Sideband (VSB) system?

Low video frequencies are attenuated

Bandwidth is conserved resulting in a saving of 2 MHz per channel over DSB system

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⇒ A white noise

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⇒ If the mantissa has a sign bit of 0 and the exponent is changed from a negative number to a more positive number the result is

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*y*

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*y*

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⇒ Which of the following describe the correct properties of an emitter follower circuit?

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⇒ To measure a resistance by a dc potentiometer

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it is necessary to use a volt ratio box

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⇒ A short-circuit is that which is

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TRUE

FALSE

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TRUE

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reverse, voltage

forward, current

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⇒ A compensator has its pole and zero as shown in the given fi

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Low power consumption

Low input impedance

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Large portability