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Electric Circuits

Electric Circuits
Consider the following circuit. In this circuit, when Vs = 3 V, I = 4 A, what is the value of I when Vs = 12 V?

 10 A.
 7 A.
 15 A.
 20 A.

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Electric Circuits
What is the unit of potential difference ?

 Ohm
 Ampere
 Watt
 Volt

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Electric Circuits
Number of branches of a graph should be --------- number of branches of a network

 greater than
 less than
 equals to
 less than equals to

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Electric Circuits
A delta connection contains three equal impedance of 60 Ω. The impedance of the equivalent star connection for each star load will be

 15 Ω.
 20 Ω.
 40 Ω.
 30 Ω.

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Electric Circuits
Lowest current density is generally recommended for plating of

 silver.
 chromium.
 bronze.
 cadmium.

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Electric Circuits
Silver coating is provided for

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

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