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Electric Circuits

Electric Circuits
For Norton’s equivalent circuit

 Isc = Voc / Req.
 Isc = Voc Req.
 Voc = Req /Isc.
 Voc = Isc / Req.

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Electric Circuits
Four resistances 80 Ohm, 50 Ohm, 25 Ohm and R are connected in parallel. Current through 25 Ohm resistance is 4A. Total current of supply is 10A. The value of R will be

 76.66.
 36.36.
 66.66.
 40.25.

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Electric Circuits
A dependent source can be

 neither a voltage nor a current source.
 a current source.
 a voltage source.
 both a voltage or a current source.

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Electric Circuits
Emf induced in a coil rotating in a uniform magnetic field will be maximum when the

 rate of change of flux linkage is maximum.
 flux linking with the coil is maximum.
 rate of change of flux linkage is minimum.
 rate of cutting flux by coil sides is minimum.

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Electric Circuits
The resistivity of the conductor depends on

 length of the conductor.
 area of the conductor.
 type of material.
 none of these.

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Electric Circuits
Reactive power drawn by a pure resistor is

 0
 maximum
None of these
 minimum

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