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Mechanical Engineering
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Heat Transfer, Refrigeration and Air Conditioning
See What Others Are Saying!
Question
The process of undercooling is generally brought about by
Options
A. circulating more quantity of cooling water through the condenser
B. using water colder than the main circulating water
C. employing a heat exchanger
D. any one of the above
Correct Answer
any one of the above
More questions
1. The transfer of heat by molecular collision is smallest in
Options
A. solids
B. liquids
C. gases
D. none of these
Show Answer
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Discuss
Correct Answer: gases
2. The phosphorus and sulphur in steel making can be removed by using basic bessemer process.
Options
A. Correct
B. Incorrect
Show Answer
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Discuss
Correct Answer: Correct
3. Discontinuous chips are formed during machining of
Options
A. brittle metals
B. ductile metals
C. hard metals
D. soft metals
Show Answer
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Correct Answer: brittle metals
4. If a pitot tube is placed with its nose upstream, downstream or sideways, the reading will be the same in every case.
Options
A. True
B. False
Show Answer
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Correct Answer: False
5. Within elastic limit, shear stress is __________ shear strain.
Options
A. equal to
B. less than
C. directly proportional to
D. inversely proportional to
Show Answer
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Correct Answer: directly proportional to
6. The machinability of steel is improved by adding
Options
A. nickel
B. chromium
C. nickel and chromium
D. sulphur, lead and phosphorus
Show Answer
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Discuss
Correct Answer: sulphur, lead and phosphorus
7. When the shear force diagram is a parabolic curve between two points, it indicates that there is a
Options
A. point load at the two points
B. no loading between the two points
C. uniformly distributed load between the two points
D. uniformly varying load between the two points
Show Answer
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Correct Answer: uniformly varying load between the two points
8. F. W. Taylor introduced a system of organisation known as
Options
A. line organisation
B. functional organisation
C. line and staff organisation
D. line, staff and functional organisation
Show Answer
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Correct Answer: functional organisation
9. When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow.
Options
A. less than
B. more than
Show Answer
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Correct Answer: less than
10. The maximum shear stress, in the given figure, is equal to __________ of the Mohr's circle.
Options
A. radius
B. diameter
C. circumference
D. area
Show Answer
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Correct Answer: radius
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