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Electric Circuits

Electric Circuits
Consider the following circuit : Switch is closed at t = 0 Find i(0 +)

 V / {R + (sL + 1 / Cs)}.
 0.
 V/R.
 (V*L) / (R*C)

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Electric Circuits
A 100 ohm resistor is directly connected across a 80 V battery. What is the power dissipation?

 10 W.
 1 W.
  64 W.
 5 W.

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Electric Circuits
If a capacitors of capacitance 100 μF is connected across a voltage source of 10 V, then what will be the energy stored in that capacitor?

 5 × 10 - 2 Joule.
 10 × 10 - 3 Joule.
 5 × 10 - 3 Joule.
 10 × 10 6 Joule.

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Electric Circuits
A motor having a power factor of 0.8 absorbs in active power of 1200 W the reactive power drawn from the supply is _________ VA.

 900
 130
 250
 400

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Electric Circuits
A series RLC circuit is connected across a 240V, 50 Hz supply. When the voltage across capacitor is 250V, a maximum current of 0.5A flows in the circuit. Find the inductance.

 1.58 µF.
 2.25 µF.
 0.47 µF.
 6.37 µF.

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Electric Circuits
A constant voltage source has

 minimum current capacity.
 high internal resistance.
 minimum efficiency.
 low internal resistance.

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