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Electric Circuits

Electric Circuits
Magnetic flux has the unit of

 Weber
 Newton
 Ampere turn
  Tesla

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Electric Circuits
If a resistor and an inductor are connected in series across a voltage source. Which two parameters in that circuit increase if frequency of voltage source increases?

 VL and VR.
 VL and I.
 Z and I.
 VL and Z.

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Electric Circuits
A star connected load has three equal impedance each of (40 + j30) Ω If the line current is 5 A then value of line voltage is

 250 √3 V.
 250 V.
 250 / √3 V.
 200 V.

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Electric Circuits
While Thevenizing a circuit between two terminals, VTH is equal to

 net voltage available in the circuit.
 none of these.
 short circuit terminal voltage.
 open circuit terminal voltage .

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Electric Circuits
What will be the rms value of rectangular wave with amplitude 10 V?

 11.2 V.
 5√2 V.
 10 V.
 7.7 V.

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Electric Circuits
A parallel plate capacitor has a capacitance of C farad. It area of the plates is doubled and the distance between them is half, the capacitance of the capacitor is

 C Farad.
 4C Farad.
 16C Farad.
 2C Farad.

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MORE MCQ ON Electric Circuits

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