Electric Circuits
Silver coating is provided for

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

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Electric Circuits
The voltage induced in an inductor is represented as,

 product of its inductance and rate of change of current through it.
 product of its inductance and current through it.
 ratio of its inductance to current through it.
 ratio of current through it to its inductance.

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Electric Circuits
When we use super node technique

 ideal voltage source is connected between two non reference nodes.
All of these
 ideal voltage source is connected between non reference node and reference.
 current source branch is common for two meshes.

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Electric Circuits
What is time period T?

 Time taken by an alternating quantity to reach the peak value.
 Time taken by an alternating quantity to complete the (+)ve half.
 Time taken by an alternating quantity to complete the (-)ve half.
 Time taken by an alternating quantity to complete one full cycle.

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