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Welding HeadSubmerged arc welding head consists of the wire spool, wire feed system, flux delivery hopper and electrical contact nozzle. The electrode wire is unwound from the spool by the power driven rolls, straightened by a set of pressure rolls and fed through the contact nozzle into the weld pool. The drive for wire feed is from a motor with speed control provided either by means of a gear box or by means of thyristor controls.
Calculate the critical crack length: A wide plate of mild steel is subjected to uniform tensile load causing a stress of 100 MPa. Calculate the critical crack length in the ce
Describe with suitable diagram the governing of impulse turbines. What are design aspects of Pelton wheel turbine and also explain all the terms. Derive mathematical formula
Track Renewal: Need for Track Renewal Normal maintenance is able to keep up the track standards only to a limited extent. The track gets overaged or the speeds and tr
Define Thermodynamics Thermodynamics is the science which deals with the conversion of heat into mechanical energy. It is relies upon observations of general experience, which
GMAW POWER SOURCE A power source wit h a flat characteristics is almost universally used for GMAW process as it provides self adjustment and stabilisation of the arc. Also it m
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
Q - Derive bending equation that is,; M / I = σ / y = E / R . Sol.: With reference t
working with complete P.P.E
Determine net work done: 5 m 3 of air at 2bar, 27 0 C is compressed to 6bar pressure following PV 1. 3 = constant. It is expanded subsequently adiabaticall
Discuss relative demerits and merits of belt, rope and chain drive for transmission of power and find the condition for transmitting the maximum power in a flat belt drive.
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