Current Electricity If the efficiency of a machine is to be high, what should be low? True component of power Input power Losses kWh consumed True component of power Input power Losses kWh consumed ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Eureka has _______ temperature co-efficient of resistance. Negative Positive Almost zero None of the listed here Negative Positive Almost zero None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of human body is about 25 ohm 200 ohm 1000 ohm 10 ohm 25 ohm 200 ohm 1000 ohm 10 ohm ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Voltage dependent resistors are usually made from Silicon carbide Charcoal Nichrome Graphite Silicon carbide Charcoal Nichrome Graphite ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a straight conductor is independent of Temperature Material Cross-sectional area Shape of cross-section Temperature Material Cross-sectional area Shape of cross-section ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as 2 : 5 5 : 2 25 : 4 4 : 25 2 : 5 5 : 2 25 : 4 4 : 25 ANSWER DOWNLOAD EXAMIANS APP
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