stability of a rectangular pontoon

Experiment :       Stability of a rectangular pontoon.

Aim              :  1. To compare the theoretical  and experimental values of the metacentric height.

                         2. To verify that the position of the metacentre is independent of the position of

                              the centre of gravity.  

                          For a rectangular pontoon floating in water.

Apparatus    :      Rectangular pontoon with a horizontally adjustable weight ( jockey weight ) , 

                             vertically adjustable weight, plumb bob and an angular scale

                              Scale , Knife edge , Water tank

Theory          :       Consider a rectangular pontoon of length i, width b , weight W , with a jockey 

                               weight w1 and a vertically adjustable weight w2 floting in water.

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Construction of 3-phase induction Motor

Experiment     : Study the construction of three phase induction motor
Objective       :To study the construction of 3-phaseinduction motor to familirite with components involved
Apparatus     :  Three phase induction motor
Theory         : Motor

1.   one-phase motor
2.   three phase motor

Ac motor speed  = PN
                            120

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Three Phase Power Measurment

Experiment : Two method watt meter of measurement of power

Apparatus   :

•  Two watt meters
• Volt meter ( 0- 600 V )
• Ammeter AC  (0-2 -10 A )
• Balanced Load ( 3ø)

Theory   :
In a three phase supply there should assentilly,by A,B and C and some times a fourth supply wire (N)

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Marcet`s Boiler

Experiment : Marcet`s Boiler


Aim                     : To show the relation between the pressure and temperature of  
                                    satuated   steam             
                             
Theory            : At a given pressure, the  temperature at which a pure substance      
                                  changes its phase is called saturation temperature . Analogusly at 
                                  pure substance change its phase is called the saturation                      
                                  pressure.

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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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