Electron-beam welding. Electron-beam welding (EBW) is a fusion welding process in which a beam of high-velocity electrons is applied to two materials to be joined.
EBW is often performed under vacuum conditions to prevent dissipation of the electron beam.
126) The electron beam welding can be carried out in
Answer is:
vacuum
Explanation:
Related Workshop Technology MCQ with Answers
Answer is:
liquid form
Explanation:
Acetylene gas is stored in cylinders in liquid form.
Answer is:
Neutral Flame
Explanation:
The neutral flame is the flame in which the amount of oxygen is precisely enough for burning, and neither oxidation nor reduction occurs. A flame with a good balance of oxygen is clear blue. The reducing and neutral flames are useful in soldering and annealing.
Neutral Welding Flame. The neutral flame has a one-to-one ratio of acetylene and oxygen. It obtains additional oxygen from the air and provides complete combustion. It is generally preferred for welding.
Answer is:
at the inner cone
Explanation:
The maximum flame temperature occurs At the inner cone.
Answer is:
less than
Explanation:
The maximum temperature of Oxy-hydrogen flame is about 2,800 °C.
The temperature of the oxyacetylene flame 3480 °C.