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Electric Circuits

Electric Circuits
Under resonance condition the power factor of a system is

 any of the above
 leading
 unity
 lagging

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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 I.
 VL and VR.
 VL and Z.
 Z and I.

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Electric Circuits
The plates of lead acid storage battery are most likely to be short circuited if

 sediment collect at the bottom of the battery.
 the electrolyte evaporates.
 the battery charged too slowly.
 too much water is added.

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Electric Circuits
A two port network is defined by the relation The value of Z11 is

 -2/11.
 -3.
 2/11.
 2.

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Electric Circuits
If the sheet of a backelite is inserted between the plates of an air capacitor, the capacitance will

 becomes zero.
 increase.
 remains unchanged.
 decrease.

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Electric Circuits
To obtain wide bandwidth, network is designed with which of the following?

 Low Q factor
 Unity Q factor
 Zero Q factor
 High Q factor

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