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Electric Circuits

Electric Circuits
Which of the following is the correct relation?

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

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

 15 V.
 5 V.
 3 V.
 1.5 V.

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Electric Circuits
Poorest conductor of electricity is

  Carbon.
  Silver.
  Aluminium.
  Steel.

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Electric Circuits
A current of 4 A flows in an ac circuit when 100 V dc is applied to it whereas it takes 250 v ac to produce the same current the power factor of the circuit is

 0.85.
 10.
 0.4.
 1.

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Electric Circuits
Electric flux is proportional to

 rate of change of potential difference.
 rate of change of current.
 potential difference between electrodes.
 resistivity of medium.

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Electric Circuits
The life of a lead acid battery is expected to be

 10 to 15 years.
 6 months.
 2 to 5 years.
 1 year.

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