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Electric Circuits

Electric Circuits
Three resistors each R Ohm is connected to form a triangle. The equivalent resistance across any terminals is

 R.
 2R/3.
 3R/2.
 R/2.

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Electric Circuits
R1 = 36 Ω and R2 = 75 Ω, each having tolerance of ±5% are connected in series. The value of resultant resistance is

  111 ± 5.55 Ω.
 111 ± 7.23 Ω.
  111 ± 0 Ω.
 111 ± 2.77 Ω.

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Electric Circuits
In a delta network each element has value R. The value of each element in equivalent star network will be

  R / 3.
 R / 4.
 R / 6.
 R / 2.

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Electric Circuits
Which of the following ABCD parameters is unit less?

 A and D.
 A and B.
 B and C.
 A and C.

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Electric Circuits
In 2 port network Z12 = Z21 indicates which property

 linear.
 bilateral.
 non linear.
 unilateral.

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Electric Circuits
An electrical motor has rating of 10 MVA at 0.8 lag, represented as series RL circuit at a 50 MVA base. Find the impedance value?

 (2 + j4) pu
 (4 + j3) pu
 (3 + j4) pu
 (4 + j2 ) pu

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