Chemical Engineering :: Chemical Engineering Basics-2
- An "orange peel" effect is observed
- Pick out the wrong statement.
- The tensile strength of plastics ranges from __________ kg/mm².
- Cobalt - 60 is used as a source of __________ in medical therapy & industrial radiography.
- Device used as a standard for the calibration of pressure gauges is a
- Regeneration of molecular seive requires it to be heated to a temperature of about __________ °C.
- Hot extrusion of aluminium is done in the temperature range of __________ °C.
- A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its
- Which of the following rays has the least wavelength?
- A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm².
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A.
Seam welding, projection welding & spot welding are the classification of electrical resistance welding |
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B.
Electrode tip in spot welding is of copper and the tip diameter should be equal to t (where, t = plate thickness to be welded) |
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C.
In spot welding, two pieces to be joined are overlapped and placed between two electrodes |
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D.
Mild steel sheet can not be spot welded |