Gas power cycles

Gas power cycle  ;

   Gas is one of the fundamental states of matter

  Real gas : It is a gas which posses

   1.compressibility Effect

   2.Non-equlillibrium thermodynamic effect

   3.variable specific heat capacity

Ideal gas :

A perfect gas or ideal gas is a theoritical gas that differs from real gas,ideal gas is one which obeys all the law under all conditions of pressure and temperature

Boyle's law :

  At constant temperature (T) pressure is inversly proportional to volume 

             P=C 1/V

             PV=C

           P1 V1=P2V2=P3V3

Charle's law :

    At constant pressure (P) volume is directly proportional to temperature

            V directly proportional to T

            V  =  C T      at P=C

 Gayissac law :

       At constant volume (V) pressure (P) is directly proportional to temperature

      P directly proportional to T

      P = C T    at V=C

      P/T =C

    

      P1/T1 = P2/T2 =P3/T3

 Characteristics Gas Constant : PV=MRT

ANGLE OF REPOSE ?

Angle of Repose! 

     The angle of repose is defined as the maximum inclination of a plane at which a body remains in equilibrium over the inclined plane by the assistance of friction only.

                

  Where

            

    R=Normal reaction acting at right angle to the inclined plane

    a=Inclination of the plane with the horizontal

    F=Frictional force acting upwards along the plane

LUBRICANTS

LUBRICANTS

Lubricants are used in bearings to reduce the friction between contacting surfaces and to carry away the heat generated by friction

The commonly used lubricants are classified as:
1. Liquid (Load oil, mineral oil etc.) 

2.Semi-solid (Grease) 
3.Solid (Graphite ) 

PROPERTIES OF A GOOD LUBRICANTS:

The desired properties of good lubricants are :

      1.They should have sufficient viscosity

      2.They must possess sufficient oiliness

      3.During operations the lubricants must not produce any gases 

EXPLAIN LAMIS THEOREM! ?

State lami's theorem ! 

   It states that,"If three  forces acting at a point are in equilibrium, each force will be
proportional to the sine of the angles between the other two forces ".

Define air conditioning?

Define air conditioning!
   
   Air conditioning is defined as the process of simultaneously control of temperature, humidity, cleanlines and distribution of air in the space to be conditioned as per requirements.