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

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Automobile Engineering in ME
A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it

Reduces the amount of kickback for large steering angles
Makes the steering more responsive
Improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion
Allows the steering wheel to be turned by a greater amount when steering

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