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Electric Circuits

Electric Circuits
A voltage of v = 100 sin (wt + π/3) is applied to pure resistor of 30 Ohm. What is the RMS value of current is

 4.71.
 2.36.
 1.92.
 5.77.

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Electric Circuits
In the figure, the potential difference between points P and Q is

 6 V.
 - 6 V.
 10 V.
 12 V.

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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.
  (-9.66 + j5) A.
  (-8.66 - j5) A.

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Electric Circuits
In parallel RLC circuit under resonance condition the value of current is

None of these
 Minimum
 Maximum
 Zero

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Electric Circuits
If the peak value of a sine wave is 100 V, then its RMS value will be

 70.7 V.
 100 V.
 88 V.
 63.6 V.

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Electric Circuits
Active materials of a lead acid cell are

 spongy lead.
 dilute H2SO4.
 lead peroxide.
 all of above.

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