Answer Posted / kumar

Need for modulation
1.Antenna height
2.Mutual interference
3.Poor efficiency

What is meant by duty-cycle?

1109

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Explain the difference between circuit switching and packet switching?

1076

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Amplitude modulation is basically a A Summing of two signals B Multiplication of two signals C Subtraction of two signals D Non-linear process

2512

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3202

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Please give the model or previous year question paper for the lecture post in government Engineering College (Electronics and Communication)

1795

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Give some examples of power electronics applications in the day-to-day life?

1069

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Define what is a rectifier?

1154

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1093

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1054

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What is the between demultiplexer and decoder?

1064

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Describe the principle of step-up chopper. Derive an expression for the average output voltage in terms of input dc voltage & duty cycle?

1177

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995

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please post me questions for technical interview in tata communications tranformations,

3655

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Tell me how to calculate knee point voltage? Describe its purpose for differential protection.

1055

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Explain what is a truth table?

1217

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