Current Electricity The SI unit of power is Coulomb Watt-hour Watt Henry Coulomb Watt-hour Watt Henry ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If the efficiency of a machine is to be high, what should be low? Losses Input power kWh consumed True component of power Losses Input power kWh consumed True component of power ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Whether circuit may be AC. or D.C. one, following is most effective in reducing the magnitude of the current. Capacitor Reactor Inductor Resistor Capacitor Reactor Inductor Resistor ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be 1/9 times 1/3 times 3 times 9 times 1/9 times 1/3 times 3 times 9 times ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is Positive About 2 ohms per degree Negative Zero Positive About 2 ohms per degree Negative Zero ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Constantan wire is used for making starndard resistance because it has Low specific resistance Negligibly small temperature co-efficient of resistance High specific resistance High melting point Low specific resistance Negligibly small temperature co-efficient of resistance High specific resistance High melting point ANSWER DOWNLOAD EXAMIANS APP