Automobile Engineering in ME
In a square type engine

Stroke length and cylinder bore are same
Two cylinders are placed horizontal and two vertical
Geometrical shape is square
Diameter and length of piston are same

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Automobile Engineering in ME
The main characteristics of a maintenance free (MF) battery is that

Since it is sealed, the water in maintenance free battery is not lost through evaporation thus accordingly it is not necessary to top up the cells with water
Recharging of a maintenance free battery is neither required nor possible
A maintenance free battery has a relatively short shelf life when compared with standard batteries
A maintenance free battery requires little maintenance during normal use and it is sufficient to add water instead of an electrolyte containing sulphuric acid

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Automobile Engineering in ME
In which of the following conditions, the idle CO percentage should be measured with the vehicle?

Headlights and other electrical devices are switched on
Headlights and other electrical devices are switched off
Headlights and other lights are switched off
Headlights are switched on

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