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Alternating Cur...

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  • Question 1
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    Find the total voltage applied in a series RLC circuit when i=3mA, VL=30V, VC=18V and R=1000 ohms.

  • Question 2
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    The power factor of an RL circuit 1/root2. If the frequency of a.c. is doubled, what will be the power factor?​

  • Question 3
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    When an emf E = 7cos wt is applied across a circuit, the current is I = 5coswt. What is the power factor for the circuit?

  • Question 4
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    What is value of power factor if Ø = 90°​

  • Question 5
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    Power in an ac circuit is equal to

  • Question 6
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    If the instantaneous current in a circuit is given by i = 2 cos (ωt - φ) A, the rms value of the current is

  • Question 7
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    Find the true power given apparent power = 10 W and power factor = 0.5​

  • Question 8
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    What is the average power/cycle in a capacitor?​

  • Question 9
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    What is phase angle given R = 10, Z = 20​

  • Question 10
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    In a circuit, the reactance X and resistance R are equal. What is the power factor?​

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