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A pelton wheel works at the foot of a dam because of which the head available at the nozzle is 400m. The nozzle diameter is 160mm and the coefficient of velocity is 0.98. The diameter of the wheel bucket circle is 1.75 m and the buckets deflect the jet by 150. The wheel to jet speed ratio is 0.46. Neglecting friction,
determine
(a) hydraulic efficiency,
(b) its speed and
(c) the power developed by the turbine.
Q. Expected service life of a component in high temperature environment? The expected service life of a component in a high temperature environment is limited by either the mat
Estimate the Weight of the Casting A Yoke casting shown in Figure is to be produced by sand casting process. Estimate the weight of the casting if the density of the material
What are the rules which must be kept in mind when designing castings? Some of the points which should be kept in mind during the process of cast designing are as follows: >
The specifications for use on a project will be as defined in the Project Execution plan. The Specification requirements will be clarified in the Engineering Estimate or at the Pr
Venturi Tube: A venturi is basically an air passage that has a shape similar to that shown in Figure that is narrower at the middle known as venturi tube. As air travels thro
The layout of a transmission shaft carrying two pulley C and B and supported on bearings A and D is shown in figure. Power is supplied to the shaft by means of vertical belt on pul
Q. Selection of Electrodes and Filler Metals? Only low hydrogen electrodes shall be used for SMAW of all carbon and low alloy steels, except for root pass welding of single wel
Special Casting Methods: 1. Die casting : Die casting is a permanent mould casting techniques in which molten metal is forced in the mould cavity under a pressure of 700 to
what is helix angle and how to determine it?
Types of Friction There are basically two types of friction, (a) Dry Friction ( b ) Fluid Friction Dry Friction: Dry friction (also called as coulomb friction man
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