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Electric Circuits

Electric Circuits
For symmetrical wave form average value of one full cycle is

 1.11
 1
 0
 2.22

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Electric Circuits
A 230V, 50Hz voltage is applied to a coil having L = 5H and R = 2 Ohm in series with capacitance C. When the voltage across the coil is 400V, find the value of C?

 10.54 µF.
 1.8 µF.
 4.78 µF.
 8.51 µF.

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Electric Circuits
Fillers in a lead acid battery are provided

 to prevent flow of gases.
 to recover acid loss through vapours.
 to facilitate flow of gases.
 all of above.

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Electric Circuits
For the circuit shown below the value of R is adjusted so as to make the current in RL equal to zero. Calculate the value of R.

 4 Ω.
 2 Ω.
 1 Ω.
 3 Ω.

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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 tie set matrix is

 b - N - 1.
 N - 1.
 b - N + 1.
 N.

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Electric Circuits
A 230V, 50Hz voltage is applied to a coil having L = 5H and R = 2 Ohm in series with capacitance C. When the voltage across the coil is 400V, find the current in the circuit?

 0.2547 A.
 0.1578 A.
 0.1465 A.
 0.4583 A.

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