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Electric Circuits

Electric Circuits
From the circuit diagram shown in question 1 find the thevnin voltage.

 3 V.
 1.5 V.
 15 V.
 5 V.

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Electric Circuits
In RLC series circuit, if the voltage across capacitor is greater than voltage across inductor, then power factor of the network is

 leading.
 unity.
 lagging.
 zero.

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Electric Circuits
You have to replace 1500 Ω resistor in radio. You have no 1500 Ω resistor but have several 1000 Ω ones which you would connect

 two in parallel and one in series.
 two in parallel.
 three in parallel.
 three in series.

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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 Z.
 Z and I.
 VL and VR.

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Electric Circuits
The synchronous speed for the seventh space harmonic mmf wave of 8 pole, 50 Hz induction machine will be

 5250 rpm in reverse direction.
 107.14 rpm in reverse direction.
 107.14 rpm in forward direction.
 5250 rpm in forward direction.

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Electric Circuits
Consider the following circuit. In this circuit, when Vs = 3 V, I = 4 A, what is the value of I when Vs = 12 V?

 15 A.
 10 A.
 20 A.
 7 A.

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