Chemical Engineering - Process Equipment and Plant Design

41.
Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about __________ mm Hg (referred to a 760 mm mercury barometer).
250
450
650
750
Answer: Option
Explanation:
No answer description is available. Let's discuss.

42.
Which of the following is the best tube material from thermal conductivity point of view alone?
Aluminium
Stainless steel
Copper
Carbon steel
Answer: Option
Explanation:
No answer description is available. Let's discuss.

43.
Normal screwed fittings are used for pipes upto a diameter of __________ inches.
1.5
3
5
7
Answer: Option
Explanation:
No answer description is available. Let's discuss.

44.
In a shell and tube heat exchanger, the clearance of the tube is generally
not less than one-fourth of the tube diameter or 3/16".
more than the tube diameter.
equal to the tube diameter.
more in case of triangular pitch as compared to the square pitch tube layout.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

45.
Diameter of the seive tray column is determined by the
lower limit of vapour velocity.
upper limit of the vapour velocity.
hole diameter of the seive tray.
height of the plate spacing.
Answer: Option
Explanation:
No answer description is available. Let's discuss.