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Quantitative laws? of abrasive wear :-
?

??????????????????? v= CLX/H
? v= volume worn away
? c= constant of proportionality
? L=Load
?X= sliding distance
?H= Hardness of the surface
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What causes gears to lose their efficiency?

Wear! As the working surfaces wear out, they don't mesh as well.


What is psychrometric chart?

The properties of air and the water contained in it at different temperatures arranged in the form of a chart which is called a psychometric chart. In particular it shows the quantitative interdependence between temperature and humidity. It is useful in the planning, specification and monitoring of cooling systems.


Why does heating and cooling cause wear and tear on a machine?

Heating and cooling cause wear and tear on a machine primarily due to thermal expansion and contraction. As materials heat up, they expand, and when they cool, they contract, which can lead to stress and fatigue in components over time. This cyclical process can create microcracks, misalignments, and other forms of mechanical degradation. Additionally, temperature fluctuations can affect lubrication properties, further exacerbating wear.


If you double the speed of centrifugal pump?

Centrifugal pumps generally obey what are known as the pump laws. These laws state that the flow rate or capacity is directly proportional to the pump speed; the discharge head is directly proportional to the square of the pump speed; and the power required by the pump motor is directly proportional to the cube of the pump speed.


What basics should know the mechanical engineer?

A MECHANICAL ENGINEER SHOULD ALWAYS KNOW THESE THESE FOLLOWING BASICS: NEWTONS LAWS OF MOTION THERMODYNAMICS LAWS STRESS STRIAN DIAGRAM (YOUNG's MODULUS) BENDING MOMENT DIAGRAM PRINCIPLE OF SUSPENSION BRIDGE SOFTWARES LIKE: PRO-E AUTOCAD AND A LITTLE ELECTRONICS AND A LITTLE MANAGEMENT.