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Electric Circuits

Electric Circuits
In above question, if circuit efficiency is 90 %. What will be output power ?

  40 kW.
  35.6 kW.
  30 kW.
  37.3 kW.

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Electric Circuits
Which variety of copper has the best mechanical strength ?

  Cast copper.
  Hard drawn copper.
  Annealed copper.
  Soft copper.

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Electric Circuits
Find the Z parameters of the circuit shown in figure.

 Z11 = 3; Z12 = 1; Z21 = 1; Z22 = 3
 Z11 = 1; Z12 = 1; Z21 = 1; Z22 = 1
 Z11 = 3; Z12 = 3; Z21 = 3; Z22 = 3
 Z11 = 2; Z12 = 1; Z21 = 1; Z22 = 2

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Electric Circuits
Three parallel resistive branches are connected across a DC supply. The ratio of the branch resistances are given as R1:R2:R3 :: 2:4:6. The ratio of the branch currents is

 2:4:6.
 2:3:6.
 6:4:2.
 6:3:2.

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Electric Circuits
Condition of reciprocity in Y-parameter representation is

 Y12 = Y21.
 Y12 = Y22.
 Y11 = Y12.
 Y11 = Y22.

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Electric Circuits
A capacitor has a capacitance of 6 μF. Calculate the stored energy in it if a DC voltage of 100 V, is applied across it?

 3 × 102 joules.
 6 × 102 joules.
 4 × 102 joules.
 2.5 × 102 joules.

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