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Electric Circuits

Electric Circuits
Which of the following may be the value of resistivity of copper at absolute zero in ohm-metre?

 3.12.
 0.020.
 6.24.
 1.56.

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Electric Circuits
Which of the following elements is/are called dynamic element/s?

 R.
 Both L and C.
 L.
 C.

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Electric Circuits
Which of the following has least resistivity?

 Copper.
 Lead.
 Mercury.
 Aluminium.

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Electric Circuits
The form factor of sinusoidal alternating current is

 0.
 1.
 1.15.
 1.11.

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Electric Circuits
Constant K type HPF (high pass filter) having cut off frequency 12 KHz and nominal impedance Ro = 500 Ω Find shunt arm inductor L and series arm capacitance C for T and π section of HPF ?

 L = 0.0132 mH, C = 0.0132 μF.
 L = 3.316 mH, C = 0.0132 μF.
 None of these.
 L = 3.316 mH, C = 132 μF.

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Electric Circuits
Active materials of a lead acid cell are

 all of above.
 lead peroxide.
 spongy lead.
 dilute H2SO4.

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