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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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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