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Electric Circuits

Electric Circuits
For the network shown below when I = 0, V = 20 V and when R = 0, I = 10 A. If now R = 3 Ω what is the value of the current I?

 5 A.
 6 A.
 10 A.
 4 A.

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Electric Circuits
In above question, if circuit efficiency is 90 %. What will be output power ?

  30 kW.
  35.6 kW.
  40 kW.
  37.3 kW.

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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.
  0.5.
  2.
 0.25.

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Electric Circuits
In the circuit shown below, find the thevnin equivalent resistance.

 5/6 Ohm.
 5 Ohm.
 1.5 Ohm.
 6/5 Ohm.

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Electric Circuits
In the circuit shown in figure if I1 = 1.5 A, then I2 will be

 1.5 A.
 1 A.
 2 A.
 0.5 A.

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Electric Circuits
Final value theorem is not applicable for which of the following?

 Both 2 and 3
 stable systems
 marginally stable systems
 unstable systems

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