Automobile Engineering in ME
A petrol engine of a car develops 125 Nm torque at 2700 r.p.m. The car is driven in second gear having gear ratio of 1.75. The final drive ratio is 4.11. If the overall transmission efficiency is 90%, then the torque available at the driving wheels is

809.1 Nm
8.091 Nm
8091 Nm
80.91 Nm

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Automobile Engineering in ME
The main task of a battery in automobiles is to

Supply electricity to the vehicle's electrical system at all times while the engine is running
Act as a reservoir or stabilizer of electricity
Supply a large amount of power to turn the starter motor when the engine is being started
Supply electricity to the alternator

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Automobile Engineering in ME
The starting system includes

A battery, a starter, and an ignition switch
A battery, a starter, and a distributor
A battery, a distributor, and an ignition switch
A distributor, a starter, and an ignition switch

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