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Electric Circuits

Electric Circuits
The value of unity impulse function at time (t) = 0 is

 infinite.
 0.
 1.
 indeterminate.

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Electric Circuits
Container of a lead acid battery

 molded hard rubber.
 celluloid.
 any of above.
 ceramics.

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Electric Circuits
Four resistances 80 Ohm, 50 Ohm, 25 Ohm and R are connected in parallel. Current through 25 Ohm resistance is 4A. Total current of supply is 10A. The value of R will be

 40.25.
 76.66.
 36.36.
 66.66.

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Electric Circuits
A piece of copper and another piece of germanium are cooled from room temperature to 80K. The resistance of

 each of them decreases.
 copper decreases and germanium increases.
 copper increases and germanium decreases.
 each of them increases.

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Electric Circuits
In RLC series circuit, at resonance condition the value of current is

 Zero
 Maximum
 Minimum
None of these

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Electric Circuits
The Laplace Transform of a shifted unit step f (t) = U (t-a) is

 e-as.
 se-as.
 s(1-e-as).
 (e-as)/s.

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MORE MCQ ON Electric Circuits

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