Electric Circuits A external resistance R is connected to a cell of internal resistance r, then the current is maximum when R = r. R > r. None of these R < r. R = r. R > r. None of these R < r. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The maximum value of a current wave is 2A. If the form factor of a current wave is 1.5 and the peak factor is 2.7, find the rms value in Amperes. 0.494 A. 0.741 A. 1.414 A. 1.57 A. 0.494 A. 0.741 A. 1.414 A. 1.57 A. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A current of 4 A flows in an ac circuit when 100 V dc is applied to it whereas it takes 250 v ac to produce the same current the power factor of the circuit is 10. 0.4. 1. 0.85. 10. 0.4. 1. 0.85. ANSWER DOWNLOAD EXAMIANS APP
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 / 4 Ω. 3 / 2 Ω. 6 Ω. 4 / 3 Ω. 3 / 4 Ω. 3 / 2 Ω. 6 Ω. 4 / 3 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits What is the unit of potential difference ? Ampere Ohm Watt Volt Ampere Ohm Watt Volt ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The internal resistance of a practical voltage source is considered to be connected in None of these parallel. either parallel or series. series. None of these parallel. either parallel or series. series. ANSWER DOWNLOAD EXAMIANS APP
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