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Q. Describe the Selection of elctrodes?
The selection of a proper electrode for electric arc welding is very important to obtain a sound welded joint of proper strength. The various factors affecting the selection of electrodes are:
• Power source: A.C. or D.C.
• Composition of base metal.
• Thickness of base metal.
• Welding position.
• Welding current conditions recommended by the manufacturer of the electrodes.
• Mechanical properties desired in the joint.
• Extent of penetration required in welding.
• Economic considerations.
Carno t Theorem: No heat engine operating in cycle between the two given thermal reservoir, having fixed temperature can be more efficient than reversible engine operating be
How do i calculate the flame radius and flame speed if unstretched flame speed=2.8m/sec and markstein length=5 mm. ?
Initial Graphics Exchange Specifications (IGES) The basic concept of IGES is concerned with the exchange of product description data from one CAD system to another one. The CAD
Q. Find out M.I. of T section as shown in figure given below about X - X and Y - Y axis through center of gravity of the section. Figure Sol.:
Motorcycle, we have learnt about the various parts of a motorcycle and their functions. Technical specifications of various models of motorcycles launched by the HHML were also not
Illustrate any three of the following : (i) Critical Damping (ii) Logarithmic decrement (iii) Vibration Isolation (iv) Equivalent stiffness of spring in series and in p
Drive an mathmatical expression for condition of maximum discharge through the chimney. Dry saturated steam is supplied from a boiler to a steam engine at a pressure of 15 bar.
Q. Explain System and Parting sand? System Sand: In mechanized foundries, where machine moulding is employed a so called "system sand" is used to fill the whole flask. Since
working, p[rinciple, construction, uses, everything
nc & cnc machines
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