Automobile Engineering in ME
Two advantages of using helical gears rather than spur gears in a transmission system are

Noise level and strength
Strength and less end thrust
Noise level and economy
Strength and cost

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Automobile Engineering in ME
Wheel base of a vehicle is the

Distance between the centres of the front tyres
Distance between the centres of the rear tyres
Distance between the centres of the front and rear wheels
Extreme length of the vehicle

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Automobile Engineering in ME
The composition of the electrolyte in a fully charged battery is that

The electrolyte is a mixture of 90% distilled water and 10% sulphuric acid by weight
The electrolyte is a mixture of 64% distilled water and 36% sulphuric acid by weight
The electrolyte is pure sulphuric acid
The electrolyte is pure distilled water

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