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EQUIPMENT FOR RESISTANCE WELDING
The equipment for resistance welding is different from that for arc welding for the following reasons: Resistance welding machines are complicated and very costly. Automation and controls are more in these. Many resistance welding equipments are custom - built. The machines can be operated with single phase or three phase mains. The equipment may be direct energy or stored energy machines. All the resistance welding machines require a low voltage, high current output (current in the order of thousand to lakhs of amperes). Four main constituents are:1. Electrical Power source2. Mechanical system3. Control equipment4. Feeding system
(a) What are the need of a surface condensing ? Write disadvantages and advantages of Jet condenser and surface condenser. (b) A surface condenser is designed to handle 10000 Kg
A force F(t) is suddenly applied to a mass m which is supported by a spring with a constant stiffness ‘K'. After a short period of time T, the force is suddenly removed. In the mea
The following data were obtained from a test on a single cylinder, double acting steam engine fitted with a rope brake. Cylinder diameter 200mm Stroke 250mm Speed 5rev/min Effec
What is Plain Concrete Footing? Plain Concrete Footing: Footings carrying relatively light loads are constructed with plain concrete. You have already seen a plain concrete
LASER SURFACE TREATMENT APPLICATIONS The laser can be used to alter the surface structure of materials either with or without alloying additions as compared to alloying by
Complete outer clutch lugs for deep cuts : Visually check for any deep cuts formed on the outer complete clutch lugs.
Q. Leak Repair Torquing Procedure? Attempt to tighten only the bolts contained within an arc that includes the leak area plus one or two bolts either side of the leak to the or
circular form tool design
If the expression is quasi-static, determine Q, ΔU and W for the process. In another process the same system expands according to the similar pressure- volume relationship and f
Introduction Fault tolerance is very important for aircraft flight control. The majority of the faults occur in the sensors and actuators onboard the aircraft. Once a fault
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