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Electric Circuits

Electric Circuits
Which of the following are the passive elements?

 Bulb
 Both
 None of these.
 Resistor

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

 2.22
 1.11
 1
 0

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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.

 2.56
 0.5
 1
 3.149

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Electric Circuits
In RC series circuit R = 2Ω, C = 2μF and 10V dc is applied. Then what is the value of current?

 0A
 5A
 2A
 10A

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Electric Circuits
In RLC series circuit if the Q factor is 1, then the damping of the system is

 Undamping
 Under damping
 Over damping
 Critical damping

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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?

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

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