kamalakannan.l


{ City } vaniyambadi
< Country > india
* Profession * customer support engineer
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Question { 7796 }

no of comparators required for 4 bit parallel A/D comparator


Answer

8

Is This Answer Correct ?    1 Yes 4 No

Question { 7796 }

no of comparators required for 4 bit parallel A/D comparator


Answer

16

Is This Answer Correct ?    0 Yes 3 No


Question { TCS, 291314 }

What is the need for modulation?


Answer

Need of Modulation:

To transfer the message signal from one site another site
without any loss for that we are using modulation.

Modulation classified in three types.

1.Amplitude modulation.
2.Frequency Modulation.
3.Phase Modulation.

Is This Answer Correct ?    278 Yes 159 No

Question { BEL, 105707 }

What is meant by pre-emphasis and de-emphasis?


Answer

Pre Emphasis

Pre emphasis is nothing but enhanging the message signal
and it is used for Transmission time.

De Emphasis

De Emphasis nothing but the comprese the message signal and
it is used for receiving time.

Is This Answer Correct ?    159 Yes 89 No

Question { 8513 }

What is a UPS?


Answer

It is a Uninturrupted power supply

Is This Answer Correct ?    11 Yes 0 No

Question { 6607 }

Describe an impedance matching circuit?


Answer

Impedence Matching:

Impedance Matching is nothing but in a network source to
load maximum power can be transfered it is called impedance
matching

Is This Answer Correct ?    2 Yes 0 No