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Electric Circuits

Electric Circuits
The absolute charge of an electron is

 1.6 × 10-19 C.
 none of above.
 - 1.6 × 10-19 C.
 + 1.6 × 10-19 C.

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Electric Circuits
Power dissipation in ideal inductor is

 Zero
 A finite value
 Minimum
 Maximum

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Electric Circuits
Types of rotating machines

 IM.
 transformer.
 synchronous machine.
 both B and C.

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Electric Circuits
A balanced 3 - φ star connected load is fed from a 208 V, 3 - φ supply. Each load has resistance of 35 Ω. The total power is

 1236 W.
 none of these.
 618 W.
 411.3 W.

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Electric Circuits
A coil with negligible resistance has 50 V across it with 10 mA. The inductive reactance is

 5000 ohms.
 1000 ohms.
 500 ohms.
 50 ohms.

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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.
 0.049 H.
 0.029.
 0.058 H.

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