Electric Circuits Efficiency of electrical machines should be calculated by measuring losses and output. output and input. losses. losses and input. losses and output. output and input. losses. losses and input. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Five cells are connected in series in a row and then four such rows are connected in parallel to Feed the current to a resistive load of 1.25Ω. Each cell has an emf of 1.5 V with internal resistance Of 0.2Ω. The current through the load will be 3.33 A 1 A 23.33 A 5 A 3.33 A 1 A 23.33 A 5 A ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The current in a chemical cell is a movement of positive ions only. negative ions only. positive hole charges. positive and negative ions. positive ions only. negative ions only. positive hole charges. positive and negative ions. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A wire of resistance R has it length and cross - section both doubled. Its resistance will become R. 4R. 0.5R. 2R. R. 4R. 0.5R. 2R. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A variable capacitance is one whose capacitance changes with temperature. changes with voltage. can be changed manually or by mechanical force. changes with time. changes with temperature. changes with voltage. can be changed manually or by mechanical force. changes with time. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits At which of the following frequency voltage across capacitor has maximum value for series circuit ? Equal to resonance frequency Zero frequency Less than resonance frequency Greater than resonance frequency Equal to resonance frequency Zero frequency Less than resonance frequency Greater than resonance frequency ANSWER DOWNLOAD EXAMIANS APP
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