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Electric Circuits

Electric Circuits
Voltage magnification will occur in which of the following case?

 Series resonance
None of these
 Parallel resonance
 Both

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Electric Circuits
The laplace transform of the fuction f(t) = t is

 s2.
 s.
 1/s2.
 1/s.

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Electric Circuits
An electric field can deflect

 x-rays.
 alpha particles.
 neutrons.
 gamma-rays.

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Electric Circuits
Which quantity consists of a unit 1KWh ?

 Energy
 Power
 Time
 Charge

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Electric Circuits
The instantaneous values of line current into a delta connected load in any two lines are + 2.5 amps and - 1.25 amps the current in the third line at the instant is ___________ A.

 10
 1
 - 1.25
 2.5

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The current in R is

 10.16 A.
 1.27 A.
 2.54 A.
 5.08 A.

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