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Electric Circuits

Electric Circuits
In the circuit given below the value of resistance Req is

 11.86 Ω.
 11.18 Ω.
 25 Ω.
 10 Ω.

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Electric Circuits
Three identical inductors are connected in delta with a 220 V, 50 Hz, 3 - φ, supply. If the phase current is 24 A, then what is the value of each of the inductance?

 None of these.
 0.058 H.
 0.049 H.
 0.029.

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Electric Circuits
The breakdown voltage for paper capacitor is usually

 more than 10000 volts.
 200 to 1600 volts.
 20 to 60 volts.
 2000 to 3000 volts.

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Electric Circuits
The ratio of electric flux density to electric field intensity is called ......... of medium

 reluctance
 permeability
 permittivity
 capacitance

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Electric Circuits
A positive and a negative charged conductor are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be

 5 times smaller than before.
 25 times larger than before.
 10 times greater than before.
 5 times greater than before.

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Electric Circuits
Time constant of RL series circuit is

 RC
 2L/R
 L/R
 2RC

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