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Q. What is coated electrode?
These types of electrodes are prepared by coating of flux on metal wire. Due to arc metal electrode melts and used as filler metal. Flux melts and forms some gas which prevents contact of oxygen and nitrogen with molten metal and also flux covers molten metal pool which is known as slag. When metal cools this slag can be removed by chipping.
(a) Explain different types of frames. Compare their merits and demerits. Diagram and illustrate a frameless construction. (b) Illustration briefly the constructional features o
Q. What is Injection moulding? An important industrial method of producing articles of thermoplastics is injection moulding. The moulding material is loaded into a hopper from
Support reaction: Explain the support reaction? What are different types of support and their reactions? Sol.: When the numbers of forces are acting on a body, and the
Find out stress - strain and elongation of bar: A circular rod having diameter 20 m and 500 m long is subjected to the tensile force of 45kN. The modulus of elasticity for st
Q. Painting of structural components of skid? Sandblasting and priming shall be carried out prior to assembly, and shall include all bolt holes, flange faces, etc. Flange gaske
(a) Briefly explain the various efficiency terms associated with an engine. (b) A four cylinder engine running at 1200 rpm delivers 20 KW. The average torque when one cylinder w
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A perfect gas flows through a nozzle when it expends in a reversible adiabatic manner, the inlet conditions are 22 bar,, 500 o c, 38 m/s. At exit the pressure is 2 bar. Evaluate th
Thermodynamics. Justify that it is the science to calculate energy, energy and entropy. Sol : Thermodynamics is science which deals with conversion of heat into mechanical e
Submerged Arc Welding Single pass filler welds upto (8.0 mm) maximum and groove welds made with a single pass or a single pass each side, may be made using an E7os-x elect
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