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Electric Circuits

Electric Circuits
The efficiency in case of maximum power transfer theorem is

 50 % - 100 %.
 less than 50 %.
 100 %.
 50 %.

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Electric Circuits
If emf in a given circuit is given by e = 100 sinω0t, then maximum value of voltage and frequency will be

 100 V, 50 Hz.
 100√2 V, 100 Hz.
 100 V, 100 Hz.
 50√2 V, 100 Hz.

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Electric Circuits
The ratio of electric flux density to electric field intensity is called ......... of medium

 capacitance
 permeability
 reluctance
 permittivity

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Electric Circuits
The internal resistance of a practical voltage source is considered to be connected in

 series.
 parallel.
None of these
 either parallel or series.

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Electric Circuits
The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

 3 / 2 Ω.
 4 / 3 Ω.
 3 / 4 Ω.
 6 Ω.

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Electric Circuits
A capacitor having a mica dielectric εR = 6, a plate area of a 10 inches2 and a separation 0.01 inch. Find the value of C

 1.349 nF.
 1.349 F.
 0 F.
 1.349 μF.

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MORE MCQ ON Electric Circuits

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