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Electric Circuits

Electric Circuits
Link in network theory refers to

  B - N - 1.
  N - B - 1.
  N - 1.
  B - N + 1.

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Electric Circuits
A star connected load has three equal impedance each of (40 + j30) Ω If the line current is 5 A then value of line voltage is

 200 V.
 250 V.
 250 / √3 V.
 250 √3 V.

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Electric Circuits
Two 1 kΩ, 1 W resistors are connected in series. Their combine resistance and wattage will be

 0.5 kΩ, 2 W.
 1 kΩ, 1 W.
 2 kΩ, 0.5 W.
 2 kΩ, 1 W.

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Electric Circuits
A rectangular magnet of magnetic moment M is cut into two pieces of same length. The magnetic moment of each piece will be

 2 M.
 M / 2.
 M / L.
 M.

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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 %.
  + 6 %.
 + 8 %.

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Electric Circuits
Given network is having N nodes and b branches, then number of individual loops are

 b - N + 1.
 b - N - 1.
 N.
 N - 1.

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