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Electric Circuits

Electric Circuits
The ratio of the resistance of a 200 W, 230 V lamp to that of a 100 W, 115 V lamp will be

 4.
  2.
  0.5.
 0.25.

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Electric Circuits
For the network shown in figure, the value of current through 8Ω resistor is

 2.4 A.
 1.5 A.
 4.8 A.
 1.2 A.

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Electric Circuits
When power factor angle is varying, the shape of the current locus is

 Circle
 Straight line
 Triangle
 Semicircle

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

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Electric Circuits
Which material has extremely large resistance?

 Semiconductor
 Conductor
None of these
 Insulator

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Electric Circuits
Dependent source of current and voltage are those which have

 independent of any other network variable.
All of these
 unidirectional characteristic.
 output dependent on input.

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