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Electric Circuits

Electric Circuits
In the circuit shown below, what is the voltage across 5 Ω resistor?

 34.4 V.
 None of them
 -28.4 V.
 -27.4 V.

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Electric Circuits
A balanced star connected load with impedance of 30j - 300 Ω is supplied from a 3 - phase, 4-wire, 173 V system, the voltages to neutral being 100j -900, 100j - 300 and 100j -1500 V. The current in neutral wire is

  5 A.
  zero.
  50 A.
  8.85 A.

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Electric Circuits
Capacitor does not allow the sudden change of

 voltage
 current
None of these
 power

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Electric Circuits
The coils having self inductor of 10 mH and 15 mH have an effective inductor of 40 mH, when connected in series aiding. What will be the equivalent inductor if we connect them in series opposing

 5 mH.
 20 mH.
 0 mH.
 10 mH.

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Electric Circuits
A 35 V source is connected to a series circuit of 600 Ω and R as shown. If a voltmeter of internal resistance 1.2 kΩ is connected across 600 Ω resistor, it reads 5 V. The value of R is

 7.2 k Ω.
 2.4 k Ω.
 3.6 k Ω.
 1.2 k Ω.

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Electric Circuits
A balanced three Phase Y-connected load has one phase voltage VB = 277∠45o V. The phase sequence is RYB. The line to line voltage VRY is

 339∠- 45o V.
 339∠45o V.
 480∠45o V.
 480∠ - 45o V.

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