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Electric Circuits

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

 non linear.
 linear.
 bilateral.
 unilateral.

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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.

 3.4.
 6.
 5.2.
 0.6.

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Electric Circuits
In RLC series circuit R = 2Ω, L = 2mH and C = 1μF. Find the time constant of the circuit?

 1 μsec
 4 msec
 2 msec
 2 μsec

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Electric Circuits
The capacity of a lead acid cell does not depends on its

 rate of discharge.
 rate of charge.
 temperature.
 quantity of active material.

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Electric Circuits
Which of following is the unit of magnetic flux density?

 Daraf.
 Weber.
 Tesla.
 Lumens.

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The current in R is

 10.16 A.
 2.54 A.
 5.08 A.
 1.27 A.

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