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Electric Circuits

Electric Circuits
In a delta network each element has value R. The value of each element in equivalent star network will be

 R / 6.
  R / 3.
 R / 2.
 R / 4.

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Electric Circuits
The current flowing between electrodes inside a lead acid battery is

 ionization current.
 polarization current.
 electron current.
 proton current.

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Electric Circuits
A voltage source having an open circuit voltage of 100 V and internal resistance of 50 Ω is equivalent to a current source

 2 A with 50 Ω in parallel.
 2 A with 50 Ω in series.
 0.5 A in parallel with 50 Ω.
 none of these.

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Electric Circuits
For the network shown below when I = 0, V = 20 V and when R = 0, I = 10 A. If now R = 3 Ω what is the value of the current I?

 5 A.
 6 A.
 10 A.
 4 A.

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Electric Circuits
Silver coating is provided for

  decorative purpose.
  protective purpose.
  all of above.
  bearing surfaces.

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Electric Circuits
Which of following materials has the least resistivity ?

  Copper.
  Zinc.
  Lead.
  Mercury.

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MORE MCQ ON Electric Circuits

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