1031. Larger length & diameter water pipes are made by
A. Electrical resistance welding
B. Die casting
C. Semi-centrifugal casting
D. Continuous casting
✅ The correct answer is option C.
Engineering
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1032. Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?
A. Anodising
B. Tempering
C. Carburising
D. Annealing
✅ The correct answer is option B.
1033. A steam carraying pipeline is insulated with two layers of insulating materials with the inferior insulation material forming the inner part. If the two insulating layers are interchanged, the heat conducted will
A. Increase
B. Decrease
C. Remain unaffected
D. May increase or decrease; depends on the thickness of each layer
✅ The correct answer is option C.
1034. Buoyancy force depends on the __________ the liquid.
A. Depth of immersion in
B. Displaced mass of
C. Surface tension of
D. Viscosity of
✅ The correct answer is option B.
1035. Adhesives
A. Can’t be used in the form of pressure sensitive tapes
B. Can’t join two dissimilar metals
C. Cure instantaneously after application on a surface
D. None of these
✅ The correct answer is option D.
1036. Dislocations are __________ defects.
A. Point
B. Line
C. Volume
D. None of these
✅ The correct answer is option B.
1037. Isotropic materials have the same __________ in all directions.
A. Induced stresses
B. Density
C. Elastic properties
D. Thermal properties
✅ The correct answer is option C.
1038. Bad odour in sanitary latrines is reduced by periodically sprinkling
A. Bleaching powder
B. Lime powder
C. Aluminium sulphate
D. None of these
✅ The correct answer is option B.
1039. Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8
A. °C
B. °F
C. °K
D. °R
✅ The correct answer is option B.
1040. Pick out the wrong statement
A. Processing of themosetting plastics is ideally done by injection moulding
B. Processing of thermoplastics is ideally done by compression moulding
C. Mass production of seamless pipes are done by electrical resistance welding (ERW)
D. Stretch forming is a process of cold drawing
✅ The correct answer is option C.