Process Equipment and Plant Design Objective Questions and Answers

141. The LMTD correction factor (F_T) is defined as the

142. The slope of the feed line in distillation opeartion is given by (where, q = fraction of the feed stream that is liquid.)

A. $$ - {\text{q}}$$

B. $$ - \frac{{\text{q}}}{{1 - {\text{q}}}}$$

C. $$ - \frac{{\text{q}}}{{{\text{q}} - 1}}$$

D. None of these

Discussion

143. Tube height in a calendria type evaporator is normally less than __________ metres.

144. 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.

A. 6% of I.D.

B. 3 times the thickness

C. Either A or B, whichever is larger

D. Either A or B, whichever is smaller

Discussion

145. __________ shaped roof is most commonly used for cylindrical tanks.

146. Holes of a sieve tray are arranged in triangular pitch of __________ times the hole diameter.