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Electric Circuits

Electric Circuits
Which of the following is the correct relation?

 AC-BD = 1.
 all of these.
 AD-BC = 1.
 AB-CD = 1 .

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Electric Circuits
A reactance having an inductor of 0.15 H is connected in series with 10 Ω resistance. What will be the inductive reactance?

 48.15 Ω.
 1.5 Ω.
 47.1 Ω.
 None of these.

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Electric Circuits
Which of following is the unit of magnetic flux density?

 Weber.
 Lumens.
 Daraf.
 Tesla.

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The voltage drop across L is

 45.5 V.
  31.9 V.
 50.5 V.
  39.1 V.

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Electric Circuits
The frequency of EMF generated by a generator depends upon its

 speed.
 both speed and number of poles.
 number of poles.
 nature of supply.

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Electric Circuits
From the circuit diagram shown in question 1 find the maximum power transferred to the load.

 15.247 W.
 1.875 W.
 4.547 W.
 9 W.

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