Chemical Engineering - Chemical Engineering Basics
Exercise :: Chemical Engineering Basics - Section 11
| 16. |
Gas carrying pipelines are best joined by |
| A. |
nuts & bolts | | B. |
rivetting | | C. |
welding | | D. |
none of these |
Answer: Option C
Explanation:
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| 17. |
Scab is a defect developed during __________ of metals. |
| A. |
forging | | B. |
sand casting | | C. |
machining | | D. |
welding |
Answer: Option B
Explanation:
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| 18. |
Pick out the wrong statement about powder metallurgy technique. |
| A. |
Powder metallurgy techniques are applied at room temperature. | | B. |
Final product in powder metallurgy is not necessarily metallic powder. | | C. |
The final product in powder metallurgy is made from metallic powder. | | D. |
Silver and nickel when melted together do not mix to form an alloy ; however alloy of these constituents can be made by powder metallurgy technique. |
Answer: Option A
Explanation:
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| 19. |
A floating body oscillates about its __________ when it is displaced slightly. |
| A. |
centre of gravity | | B. |
metacentre | | C. |
centre of buoyancy | | D. |
centre of pressure |
Answer: Option B
Explanation:
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| 20. |
Which of the following relatively employs the highest heat transfer surface area in a high pressure boiler ? |
| A. |
Airpreheater | | B. |
Economiser | | C. |
Steam superheater | | D. |
Furnace water wall |
Answer: Option A
Explanation:
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