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Electric Circuits

Electric Circuits
A 10 Ohm resistor has power rating of 1W. Find the maximum current rating.

 0.1 A.
 1 A.
 0.316 A.
 0.01 A.

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Electric Circuits
What is the relation between time period T and frequency?

 T = 0.5 / frequency.
 T = frequency.
 T = 0.85 / frequency.
 T = 1 / frequency.

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Electric Circuits
There are two capacitors C1 and C2 in parallel , what will be their equivalent capacitance?

 C1C2.
 (C1 + C2) / C1C2.
 C1 + C2.
 (C1C2) / C1 + C2.

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Electric Circuits
The unit of resistivity is

 Ω / metre.
 Ω.
 Ω / m².
 Ω - metre.

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Electric Circuits
To reduce hysteresis loss, we use

 copper bars.
 CRGO steel.
 soft-iron.
 laminated sheets.

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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

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

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