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Electric Circuits

Electric Circuits
In ideal system coefficient of coupling(k) is

 0
 Both 2 and 3
 1
 ∞

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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
If the dielectric of a capacitor is replaced by conducting material

 the capacitor can store infinite charge.
 the plate will get short circuited.
 the capacitor will get heated up due to eddy currents.
 the capacitance value of the plate will decrease.

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Electric Circuits
Which of the following may be value of resistivity of copper?

 1.7 X 10 - 6.
 1.7 X 10 - 4.
 1.7 X 10 - 3.
 1.7 X 10 - 5.

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Electric Circuits
To find the initial value of a function, the highest power of S in denominator should be ---------- the highest power of S in the numerator.

 greater than
 equals to
 less than
 both a and c

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Electric Circuits
When 125 V is applied across a 250 V, 100 W filament incandescent bulbs, the power consumption is

 12.5 W.
 100 W.
 50 W.
 25 W.

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