Electronics Engineering Question:

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What is negative frequency?

Electronics Engineering Interview Question
Electronics Engineering Interview Question

Answer:

it can't be negative because freguency is simply the reciprocal of time and time can't be negative.

We use negative frequencies in our calculations just for easieness but remember at last we neglect it also.

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Fermi level for an intrinsic semiconductor lies midway between the valence and conduction bands, because.

a) the temperature does not influence its position.
b) the effective mass of hole is greater than that of electron
c) the effective mass of electron is taken equal to that of hole
d) none of the above

Which is the right option?		Explain why we are using the bridge rectifier in most of the circuits instead of full wave rectifier even though the output of both are same?