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 With rise in temperature the resistance of pure metals First increases and then decreases Increases Decreases Remains constant First increases and then decreases Increases Decreases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Constantan wire is used for making starndard resistance because it has High melting point High specific resistance Low specific resistance Negligibly small temperature co-efficient of resistance High melting point High specific resistance Low specific resistance Negligibly small temperature co-efficient of resistance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity No current flow between two charged bodies if they have same Potential Charge Capacity None of the listed here Potential Charge Capacity None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The substances which have a large number of free electrons and offer a low resistance are called Conductors Insulators Semi-conductors Inductors Conductors Insulators Semi-conductors Inductors ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Three resistance of 10 ohms, 15 ohms, and 30 ohm are connected in parallel. The total resistance of the combination is 10 ohms 5 ohms 15 ohms 55 ohms 10 ohms 5 ohms 15 ohms 55 ohms ANSWER DOWNLOAD EXAMIANS APP
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