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Electric Circuits

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

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

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Electric Circuits
In RLC series circuit if the Q factor is 1, then the damping of the system is

 Critical damping
 Undamping
 Over damping
 Under damping

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Electric Circuits
A capacitor is connected to supply with switch and the switch is connected between capacitor and supply. Initially switch is open at time zero, and then switch is closed. Then how capacitor behaves at time t = 0+?

 dielectric losses increases.
 open circuit.
 dielectric losses decreases.
 short circuit.

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

 any of the above
 leading
 lagging
 unity

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Electric Circuits
Rms value is defined based on which of the following?

 Voltage
 Heating effect
 Charge transfer
 Current

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