Current Electricity If the efficiency of a machine is to be high, what should be low? kWh consumed Losses Input power True component of power kWh consumed Losses Input power True component of power ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The substances which have a large number of free electrons and offer a low resistance are called Insulators Conductors Semi-conductors Inductors Insulators Conductors Semi-conductors Inductors ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which method can be used for absolute measurement of resistances? Wheastone bridge method Lorentz method Releigh method Ohm's law method Wheastone bridge method Lorentz method Releigh method Ohm's law method ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Insulators have _______ temperature co-efficient of resistance. Negative Positive Zero None of the listed here Negative Positive Zero None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Current Electricity At 0 K, germanium behaves as A ferromagnetic substance An insulator A superconductor A conductor A ferromagnetic substance An insulator A superconductor A conductor ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The specific resistance of a metallic conductor ______ with rise in temperature. None of the listed here Decreases Remains unchanged Increases None of the listed here Decreases Remains unchanged Increases ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS