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Electric Circuits

Electric Circuits
A two port network is defined by the relation The value of Z11 is

 -2/11.
 -3.
 2/11.
 2.

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Electric Circuits
A 3 – φ delta connected symmetrical load consumes P Watts of power from a balanced supply. If the same load is connected in star to the same supply then what is the power consumption?

 P/3.
 √3P.
 3P.
 P.

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Electric Circuits
Silver coating is provided for

  all of above.
  protective purpose.
  decorative purpose.
  bearing surfaces.

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Electric Circuits
During electroplating the amounts of different substances liberated by same quantity of electricity are proportional to their

  valency.
  atomic weights.
  chemical equivalents.
  atomic numbers.

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Electric Circuits
A wire 2.5 m long is bent into a square. An current of 100 A flowing through the wire will produce a magnetizing force at the center of the square, equal to

 196 AT / m.
 144 AT / m.
 72 AT / m.
 222 AT / m.

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Electric Circuits
Three resistances of two ohms each are connected in star. In the equivalent delta representation each resistance will have a value of _______________ Ω.

 0.6.
 5.2.
 6.
 3.4.

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