Current Electricity If the efficiency of a machine is to be high, what should be low? kWh consumed Input power True component of power Losses kWh consumed Input power True component of power Losses ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Eureka has _______ temperature co-efficient of resistance. Positive Negative Almost zero None of the listed here Positive Negative Almost zero None of the listed here 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 The weight of an aluminium conductor as compared to a copper conductor of identical cross-section, for the same electrical resistance, is 0.5 1.5 0.6 1 0.5 1.5 0.6 1 ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The current in the circuit having constant resistance is tripled. The power increases 9 times 3 times 1/3 times 1/9 times 9 times 3 times 1/3 times 1/9 times ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A copper wire has a resistance of 10 Ω. It is stretched by one-tenth of its original length. Then its resistance will be 12.1 Ω 10 Ω 9 Ω 11 Ω 12.1 Ω 10 Ω 9 Ω 11 Ω ANSWER DOWNLOAD EXAMIANS APP
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