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Electric Circuits

Electric Circuits
In series RLC circuit what is the power factor just above the resonance frequency?

 Leading
 Unity
 Zero
 Lagging

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Electric Circuits
Power factor can be defined as

 both option B and C.
 sine of voltage and current.
 ratio of resistance versus impedance.
 cosine of angle between voltage and current.

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Electric Circuits
Three identical resistor are connected in star across a 3 phase 550 V supply dissipating a total power of 300 W the line current is ____________ A.

 2.56
 0.5
 1
 3.149

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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)

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

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Electric Circuits
A reactance having an inductor of 0.15 H is connected in series with 10 Ω resistance. What will be the inductive reactance?

 1.5 Ω.
 None of these.
 47.1 Ω.
 48.15 Ω.

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Electric Circuits
Power dissipation in ideal inductor is

 Zero
 A finite value
 Minimum
 Maximum

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MORE MCQ ON Electric Circuits

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