Electric Circuits A external resistance R is connected to a cell of internal resistance r, then the current is maximum when R < r. None of these R > r. R = r. R < r. None of these R > r. R = r. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits An AC voltage of 200 V at 50 Hz is applied to a coil which draws 5 A and dissipates 1000 W. The resistance and impedance of the coil respectively are 50 Ω and 200 Ω. 40 Ω and 200 Ω. 40 Ω and 40 Ω. 25 Ω and 5 Ω. 50 Ω and 200 Ω. 40 Ω and 200 Ω. 40 Ω and 40 Ω. 25 Ω and 5 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits What are the points to be mentioned in specifying main switches? None of these. Both A and B. Current rating. Voltage grade. None of these. Both A and B. Current rating. Voltage grade. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits What is the mass number of an element that has 19 protons, 19 electrons, and 20 neutrons? 38. 20. 39. 19. 38. 20. 39. 19. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Energy efficiency during electroplating is usually in the range 85 to 90%. 50 to 80%. 90 to 99%. 80 to 85%. 85 to 90%. 50 to 80%. 90 to 99%. 80 to 85%. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits If a resistor is connected across the voltage source and the frequency of voltage and current wave form is 50Hz, then what is frequency of instantaneous power 100 Hz. 50 Hz. 0 Hz. 150 Hz. 100 Hz. 50 Hz. 0 Hz. 150 Hz. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS