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Electric Circuits

Electric Circuits
In RL series circuit R=2Ω and L=10mH and applied voltage is 10V DC. Then find the current in the network?

 0A
 5A
 10A
 1A

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Electric Circuits
The Laplace Transform of a shifted unit step f (t) = U (t-a) is

 s(1-e-as).
 e-as.
 (e-as)/s.
 se-as.

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Electric Circuits
A capacitor of 50 microfarad is connected in series with a resistance of 120 Ω. If above circuit is connected across 240 V, 50 Hz 1 - φ supply. Find the capacitive reactance?

 63.7 Ω.
 135.86 Ω.
 1.765 Ω.
 0.015 Ω.

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Electric Circuits
Active filter consists of

 capacitor.
 op-amp and capacitor.
 op-amp.
 inductor.

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Electric Circuits
In the given figure, the Thevenins equivalent voltage and impedance as seen from the terminals P - Q is given by

 4 V and 5 Ω.
 2 V and 5 Ω.
 4 V and 7.5 Ω.
 2 V and 7.5 Ω.

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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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