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ROTARY CONVERTERSHistorically, these type of power sources were developed first for arc welding applications and even now these types are popular. These rotary converters are of two types: namely motor driven and engine driven. The engine driven type also comes in two models. Diesel engine driven generators (with auxiliary power output for grinder, etc) are very useful in heavy duty structural applications and for pipeline work. Petrol Engine driven generators which are light and portable are useful for light duty and repair works at site. The efficiency of rotary converter is rather low (60 % for motor driven & Engine driven) and the maintenance is also costly due to wear and tear of rotating machinery.
Differentiate between perfect, deficient and redundant trusses
Heat Treatment of Cast Iron: Castings in iron are frequently heat treated for enhancing mechanical properties and microstructure. The treatments known to cast iron are explai
A sign of uniform density weighs 270 lb and is supported by a ball-andsocket joint at A and by two cables. Determine the tension in each cable and the reaction at A.
The attached figure depicts an indirectly fired gas turbine engine. In the gas turbine engine, air is compressed to a high pressure and then heat is added. The high pressure, high
Methods of analysis of trusses: What are the methods of analysis of trusses? What is found when the analysis of a system is done? Sol.: The forces in the members of
Short Circuiting Transfer The short circuiting transfer occurs when the welding current and the arc voltage is low. Metal is transferred from the electrode to the work only wh
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WHICH IS THE BEST ONLINE MONITORING SYSTEM FOR GAS METAL ARC WELDING
Explain POINT ANGLE - Angle of drills It is also known as a cutting angle. Its most commonly used value for a large variety of materials is 118.Though,its varies from 80 to 140
Explain Soft or Flexible Automation? This system uses tape, a hand-held control box, microprocessors, programmable logic controllers or computers. The system can be reprogramme
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