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Electric Circuits

Electric Circuits
In the circuit given, I = 1 A for Is = 0. What is the value of I for Is = 2 A ?

 4 A.
 3 A.
  2 A.
 1 A.

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Electric Circuits
Three resistances have the following ratings 150 Ω at 5 %, 100 Ω at 5 % and 200 Ω at 5 % respectively. The percentage error when all the three are connected in series will be

 + 7 %.
  + 5 %.
 + 8 %.
  + 6 %.

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Electric Circuits
Two resistors R1 and R2 give combined resistance of 4.5 Ohm when connected in series and 1 Ohm when in parallel, the resistances are

 1.5 Ohm and 3 Ohm.
 2 Ohm and 2.5 Ohm.
 1.25 Ohm and 3.25 Ohm.
 2.2 Ohm and 2.3 Ohm.

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Electric Circuits
Which of the following can not be connected in series unless they are identical?

 Resistance.
 Current source.
 Voltage source.
 Both of above.

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Electric Circuits
The alternative names for active power is/are

 real power.
 true power.
All of these
 average power.

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Electric Circuits
In a delta network each element has value R. The value of each element in equivalent star network will be

 R / 2.
 R / 4.
  R / 3.
 R / 6.

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