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Electric Circuits

Electric Circuits
In which of the following oscillations are not present?

 Under damping
 Both 2 and 3
 Critical damping
 Over damping

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Electric Circuits
Three identical resistor are connected in star across a 3 phase 550 V supply dissipating a total power of 300 W the line current is ____________ A.

 3.149
 0.5
 1
 2.56

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Electric Circuits
Unit of apparent power is

 VA.
 Watts.
 VAR.
 KWhr.

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Electric Circuits
If N is the number of nodes and b is the number of branches in a network, then rank of cut set matrix is

 b - N - 1.
 b - N + 1.
 N - 1.
 N.

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Electric Circuits
Cells are connected in parallel in order to increase

 current capacity.
 efficiency.
 life of the cells.
 voltage rating.

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Electric Circuits
Mica capacitor are characterised by all of following except

 low losses.
 accurate value.
 low leakage reactance.
 stable operation.

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MORE MCQ ON Electric Circuits

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