How to learn to learn

Many student have very big problem that when they have to face some exam they will get a tension for for exam.Why we  get a extra tension to exam.

1. If we haven`t study enough we can get a tension to exam.
2. If we study well , but we can`t realize again and agian
3. Other thing is student have to get their parents` or some person`s purposes  

If we are not going to study well we can`t face to exam well.So we have to study well.If we can`t understand theory well we can ask it from friend or teacher again and again.If we do some thing again and again we can tough that work well.Think about this.When we are practice to drive a motor cycle we can`t drive it in first time.There is a rhythm in all things.If we can tough this rhythm we said that i learned.So we must learn to catch this  rhythm.Also maths,science have a rhythm.If some one catch this rhythm he/she will learn well.I`ll explain what is this rhythm.

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Tensile test

Experiment : Tensile test on a mild steel specimen


Aim              : To find ,
                
                                           1. Yield stress
                                           2. Tensile strength ( maximum stress )
                                           3. Stress at fracture
                                           4. Percentage elongation
                                           5. Percentage reducing in area

Apparatus   : Hounsfield Tensometer
                           Gauge for percentage elongation and percentage reduction in  
                           area
                           Vernier caliper

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Friction loss along a pipe

Experiment : friction loss along a pipe


Aim                    : 1. To verify darcy`s law frictional flow through pipes.
                                   2.To determine the friction factor for a fully developed 
                                    turbulent  flow                                                   






Apparatus   : 1.pipe friction apparatus         2. Bucket
                                    3.Measuring cylinder               4.Spirit level
                                    5.Stop watch                              6.Ruler


Theory        : Darcy`s low for frictional head for   turbulent  flow  given 
                                              H_f = (λL /2gD )ⁿ
                                             H_{f  = fricion head loss}
                                             λ    = Friction factor
                                            L    = length of pipe
                                            v    = Velocity

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circular orifice

Experiment:  circular orifice
Aim             :  To determine the cofficient of Discharge (c_d) by constant head                                                 
                           method
Apparatus      : 1.orifice Manometer        2.Spanner
                        3.Measuring cylinder       4.Spirit level
                        5.Stop watch
Theory         : Let the area of cross section of the orifice be  'a' and the head above  
                       the level of center of the orifice be 'H' Applying bernoulliu`s equation    
                      between point A and B      

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Herical spring practical

                                     









Experiment : Axial deflection of a close coiled helical springs by loading


Aim           : To determine
                        (a)    The modulus of Rigidity of a  close coiled helical springs
                        (b)    Spring constant ( Stiffness )


Apparatus  : 1. close coiled herical springs
                   2. Loading frame
                   3.dial gauge
                   4.weights
                   5.Vernier caliper


Theory     : When a close coiled helical spring is loaded deflection is given by
                                          δ  = 64 WR²N
                                                    D⁴G
               Where,
                   δ = Axial  deflection due to load          W = Axial load
                  R = Mean radius of the coil                  N = Number of Coils
                  D = Diameter of spring wire                 G = Modulus of Rigidity

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