Cylindrical shell thickness of rotary drier is generally _______________ mm?
Cylindrical shell thickness of rotary drier is generally _______________ mm?
A. 2-3
B. 18-22
C. 6-8
D. 12-15
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Which of the following is the best tube material from thermal conductivity point of view alone ?
Which of the following is the best tube material from thermal conductivity point of view alone ?A. Aluminium
B. Stainless steel
C. Copper
D. Carbon steelReflux ratio variation in a distillation column is between___________________?
Reflux ratio variation in a distillation column is between___________________?A. Zero and infinity
B. Zero and one
C. Minimum and infinity
D. None of theseA/an _______________ is used for changing the direction of a pipeline?
A/an _______________ is used for changing the direction of a pipeline?A. Elbow
B. Union
C. Flange
D. Disc compensatorIn a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is__________________?
In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is__________________?A. Called tube pitch
B. Called tube clearance
C. Always less than the diameter of the tube
D. None of theseIn hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around __________________?
In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around __________________?A. 0.5
B. 1.5
C. 2.5
D. 3.5If ‘D’ is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of__________________?
If ‘D’ is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of__________________?A. D/2 or minimum 2″ to 5D
B. D/5 or minimum 2″ to 5D
C. D/5 or minimum 2″ to D
D. None of these