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Low torque gives high speed. But when a machine produces high torque, its speed will reduce.

It varies displacement by changing angle of swash plate. Swash plate swings in a movable yoke which is pivoted on a pintle to increase or decrease the piston stroke.

An airfoil shaped body moving through a fluid produces an aerodynamic force.
In an airfoil body separation occurs at the extreme end of the body.

A U-shaped tube that conducts the flow of liquids through it due to pressure difference is called syphon. The highest point in it is called summit.

Knocking in diesel engines is caused due to the sudden increase in pressure and temperature. It causes a rattling sound at the time of ignition.

Swirl in CI engine is the rotary motion of air about the axis of engine cylinder in the combustion chamber for the proper mixing of small fuel droplets with hot air.

A supercharger increases pressure and density of air supplied to IC engine, thus providing more oxygen which helps in the proper combustion of fuel.

Isotropy is uniformity in all directions. It has identical values of a property in all directions.
Eg; Glass

It is also known as green elastic material.
It is an ideally elastic material. They tend to respond elastically when they are subjected to very large strains and shows both a non linear material behaviour as well as large shape changes.

The instrument used to measure clearance between valve and tappet of an IC engine is feeler gauge.

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