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Electric Circuits

Electric Circuits
Which battery is used in aeroplanes?

 Lead acid battery.
 None of them.
 Dry cell battery.
 Edission cell.

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Electric Circuits
Which of the following represents the resonance frequency (ω0) with respect to lower cutoff frequency (ω1) and higher cutoff frequency (ω2)

 √(ω1² + ω2²)
 ω1 - ω2
 ω1 / ω2
 ω1 + ω2

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Electric Circuits
The delta equation of given star connected impedance ZQR is equal to

 (20 + j10) Ω.
 40 Ω.
  (10 + j30) Ω.
 (5 + j10 / 3) Ω.

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Electric Circuits
The strength of current in 1 H inductor changes at rate of 1 A / sec. Find the voltage across it?

 None of these.
 0.5 V.
 1 V.
 2 V.

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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 phase angle of current in respect of supply voltage will be

 40.4o.
 28.8o.
 20.2o.
 32.1o.

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Electric Circuits
Which of following is the unit of magnetic flux density?

 Weber.
 Daraf.
 Tesla.
 Lumens.

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MORE MCQ ON Electric Circuits

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