Chemical Engineering - Process Equipment and Plant Design

31.
Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effect in evaporation
increases capacity.
increases economy.
does not affect the capacity.
both 'b' & 'c'.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.
for a Tee (used as elbow, entering run) would be around
5
60
200
350
Answer: Option
Explanation:
No answer description is available. Let's discuss.

33.
Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always
less than arithmetic mean value.
more than arithmetic mean value.
more than geometric mean value.
both(b) & (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.

34.
Practical dividing line between a ductile and brittle materials is suggested, when the ultimate elongation is about 5%. Generally, larger the knuckle radius, stronger is the corner torus section of a head. The knuckle radius provided should be less than __________ of the head.
6% of I.D.
3 times the thickness
either (a) or (b), whichever is larger
either (a) or (b), whichever is smaller
Answer: Option
Explanation:
No answer description is available. Let's discuss.

35.
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").
half
three fourth
equal to
1.5 times
Answer: Option
Explanation:
No answer description is available. Let's discuss.