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Electric Circuits

Electric Circuits
The internal resistance of a dry cell is of the order of

  1 to 15 Ohm.
  2 to 5 Ohm.
  0.2 to 0.4 Ohm.
  1 to 1.5 Ohm.

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Electric Circuits
To find the initial value of a function, the highest power of S in denominator should be ---------- the highest power of S in the numerator.

 greater than
 equals to
 less than
 both a and c

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Electric Circuits
For finding the Z11 parameter at the input port of a two port network

 output port is open circuited.
 input port is short circuited.
 output port is short circuited.
 input port is open circuited.

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

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

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Electric Circuits
What is apparent power in AC operation?

 Product of voltage and current at full load.
 Product of rms voltage and rms current.
 Product of voltage and current.
 Product of voltage and current at no load.

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

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

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