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Working Chamber of EBW
The chamber is usually rectangular in shape and has heavy windows to permit viewing the work. Both high voltage machines and low voltage machines are available with work chamber that can be evacuated to high vacuum (or partial vacuum (10-4).The basic requirements of vacuum is the electrons need to flow in a beam from the emitter to the target unimpeded by the presence of any gas molecules that may cause scattering and slow down of the beam. The source of electrons is a tungsten filament heated to around 2200 °C. At this temperature, the filament will oxidise very quickly because of the presence of oxygen in air. The pumping equipment is usually completely automatic once the set up has been completed.
Explain the Advantages of Automation 1. There is an increase in productivity. 2. The unit cost is reduced as larger number of components can be manufactured in shorter time
Torsion equation derivation
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what do you mean by law of belting and also explain the crowning of pulleys ?
a plano concave lens is used instead of plano convex lens in newtons ring
EXPALIN PREPARATION OF LYOPHILIC AND LYPHOBIC SOLS
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If "o" ring is found to be leaking or oil seal is found to be leaking check as mentioned: If "O" ring found to be leaking change "O" rings. If oil seal found to be leaking check o
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