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Electric Circuits

Electric Circuits
Three resistors each R Ohm is connected to form a triangle. The equivalent resistance across any terminals is

 3R/2.
 R/2.
 R.
 2R/3.

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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

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

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Electric Circuits
The energy required to charge a 10 μF capacitor to 100 V is

 5 × 10-9 J.
 0.05 J.
 0.01 J.
 10 × 10-9 J.

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

 1.2 A.
 4.8 A.
 2.4 A.
 1.5 A.

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Electric Circuits
Rms value is defined based on which of the following?

 Voltage
 Heating effect
 Charge transfer
 Current

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Electric Circuits
The terminals across the source are ___________ if a voltage source is to be neglected.

 short circuited.
 open circuited.
 replaced by a series resistance.
 replaced by a shunt resistance.

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