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Electric Circuits

Electric Circuits
Which of the following quantities consists of SI unit as WATT ?

 Power
 Current
 Force
 Charge

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Electric Circuits
For balanced star load, if unbalanced line current are IR, IY, IB equal to - j10, - j10 and - j20 respectively, the neutral current will be equal to

  (-9.66 + j5) A.
  (8.66 + j5) A.
  (8.66 - j5) A.
  (-8.66 - j5) A.

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Electric Circuits
The form factor of sinusoidal alternating current is

 1.15.
 0.
 1.
 1.11.

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Electric Circuits
Active filter consists of

 capacitor.
 op-amp and capacitor.
 inductor.
 op-amp.

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Electric Circuits
An AC voltage of 200 V at 50 Hz is applied to a coil which draws 5 A and dissipates 1000 W. The resistance and impedance of the coil respectively are

 25 Ω and 5 Ω.
 50 Ω and 200 Ω.
 40 Ω and 40 Ω.
 40 Ω and 200 Ω.

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Electric Circuits
Magnetic flux has the unit of

 Newton
  Tesla
 Ampere turn
 Weber

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