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Electric Circuits

Electric Circuits
Select the wave that has the least value of form factor.

 Square wave.
 Triangular wave.
 Sine wave.
 Rectangular wave.

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Electric Circuits
The inductive reactance of an electric circuit is 200 Ohms. The frequency of supply becomes doubled. What is the new capacitive reactance?

 50 Ohms.
 200 Ohms.
 100 Ohms.
 400 Ohms.

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Electric Circuits
When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of heater will

  decrease.
  remain constant.
  none of these.
  increase.

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

 leading
 any of the above
 lagging
 unity

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Electric Circuits
Millman theorem yields equivalent

 impedance.
 both ‘c’ and ‘d’ .
 current source.
 voltage source.

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Electric Circuits
A constant current source supplies a electric current of 300 mA to a load of 1 KΩ. When the load changed to 100 Ω, the load current will be

 3 A.
 30 mA.
 300 mA.
 100 mA.

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