Physics Ball bearings are used in cycles, scooters etc to Reduce the friction between the wheel and the axle None of these Increase the friction between the wheel and the axle Reduce the friction between ground and the whee Reduce the friction between the wheel and the axle None of these Increase the friction between the wheel and the axle Reduce the friction between ground and the whee ANSWER DOWNLOAD EXAMIANS APP
Physics Air coolers are more suitable for Hot and dry climate Hot and humid climate Cool and humid climate Cool and dry climate Hot and dry climate Hot and humid climate Cool and humid climate Cool and dry climate ANSWER DOWNLOAD EXAMIANS APP
Physics In which of the following cases, kinetic energy is being used in performing work ? Wind mill grinding wheat grain Driving a car to cover a distance Rowing a boat in the lake Paddling the bicycle to cover a distance Wind mill grinding wheat grain Driving a car to cover a distance Rowing a boat in the lake Paddling the bicycle to cover a distance ANSWER DOWNLOAD EXAMIANS APP
Physics The device used for locating submerged objects under sea is. Laser Sonar Radar Maser Laser Sonar Radar Maser ANSWER DOWNLOAD EXAMIANS APP
Physics The sensation of weightlessness in a spacecraft in an orbit is due to the Acceleration in the orbit which is equal to the acceleration due to gravity outside Absence of gravity outside Presence of gravity outside but not inside the spacecraft Fact that spacecraft in the orbit has no energy Acceleration in the orbit which is equal to the acceleration due to gravity outside Absence of gravity outside Presence of gravity outside but not inside the spacecraft Fact that spacecraft in the orbit has no energy ANSWER DOWNLOAD EXAMIANS APP
Physics Transformer is a device to convert Mechanical energy into Electrical energy Low voltage D.C. into high voltage D.C. C. to A.C. Low voltage A.C. into high voltage A.C. Mechanical energy into Electrical energy Low voltage D.C. into high voltage D.C. C. to A.C. Low voltage A.C. into high voltage A.C. ANSWER DOWNLOAD EXAMIANS APP
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