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Electric Circuits

Electric Circuits
In direct arc furnace which of following is of high value?

 All of above.
 Voltage.
 Power factor.
 Current.

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Electric Circuits
A voltage source having an open circuit voltage of 100 V and internal resistance of 50 Ω is equivalent to a current source

 0.5 A in parallel with 50 Ω.
 none of these.
 2 A with 50 Ω in parallel.
 2 A with 50 Ω in series.

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Electric Circuits
In the circuit shown below, find the thevnin equivalent resistance.

 5 Ohm.
 5/6 Ohm.
 6/5 Ohm.
 1.5 Ohm.

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Electric Circuits
A capacitor that stores charge of 0.5 C at 10 V has a capacitance of _____________ farad.

 20.
 5.
 10.
 0.05.

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Electric Circuits
Which of the following quantities consists of SI unit as WATT ?

 Charge
 Current
 Force
 Power

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Electric Circuits
Three identical resistor are connected in star across a 3 phase 550 V supply dissipating a total power of 300 W the line current is ____________ A.

 3.149
 0.5
 1
 2.56

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