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Electric Circuits

Electric Circuits
In series R, L circuit power factor can be defined as

 P/S
 R/Z
 Vr/V
All of these

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Electric Circuits
R1 = 36 Ω and R2 = 75 Ω, each having tolerance of ±5% are connected in series. The value of resultant resistance is

 111 ± 7.23 Ω.
  111 ± 5.55 Ω.
  111 ± 0 Ω.
 111 ± 2.77 Ω.

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Electric Circuits
In balanced bridge, if the positions of detector and source are interchanged, the bridge will still remain balanced. This can be explained from which theoem

 Norton's theorem
 Compensation theorem
 Thevinin's theorem
 Reciprocity theorem

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Electric Circuits
Under resonance condition the power factor of a system is

 lagging
 any of the above
 leading
 unity

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Electric Circuits
Ampere second is the unit of

 charge.
 power.
 energy.
 conductance.

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Electric Circuits
An ideal constant voltage source has _______________ internal impedance whereas a constant current source has ____________ internal impedance.

 infinite, infinite
 zero, infinite
 zero, zero
 infinite, zero

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