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Q. Which functions used for coating?
• Improves arc stability by providing certain chemical which have this ability, by ionizing the path of arc.• Provides a protective gaseous atmosphere to prevent O2, H2 and N2 pick-up by the molten metal.• Provides a protective slag over hot metal.• Provides flux, which helps to remove oxides and other impurities from the molten weld metal.• Reduces spatter of weld metal- when coating burns off slower than core.• Acts as deoxidizers.• Adds alloying elements.• Increases deposition efficiency.• Slows down the cooling rate of weld (due to protective layer of slag) to prevent hardening.• Coatings are normally insulators of electricity and so permit the use pf electrodes in narrow grooves etc.
State required Features of Fourier Law. What are the factors on which co-efficient of thermal conductivity (K) depends upon ? Write the unit of K.
Resistor: The wire that opposes (resists) the flow of current through it by virtue of its property is called resistor. This property is known as resistance. The resistance is
if motion of the belt is reversed, how the law of the belting shall be violated??
Determine the point of contraflexure: Draw the shear force & bending moment diagram for 10 m span overhanging beam along overhanging part of 4 m subjected to a system of loads
1.Calculate the heat-removal factor for a collector having an overall heat-losscoefficient of 6 W/m2K and constructed of aluminum fins and tubes. Tube-to-tube centered distance is
Q. Describe the Slope - Area Method? In the event of infeasibility of Velocity Area method on account of either rapid rise or fall of floods or lack of equipment or any other r
I am am Mtech student of Machine design and I am willing to join some core companies so is this the right time for learning some software''s if yes which are they...
winter&summer refrigeration .
Wrought Aluminium Alloys Extrusion ingots and sheets are cast through semi-continuous direct chill method. The sheet ingots are scalped in which about 12 millimeter of ingot s
Obtain the closed loop transfer function of the system shown:
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