Engineering Questions with Answers - Multiple Choice Questions
Distillation Design MCQ’s – Analysis of Existing Columns with Brinkley Method
1 - Question
Brinkley Method can be used for,
i) Distillation
ii) Leaching
iii) Absorption
a) True
b) False
View Answer
Answer: a
Explanation: This method is suitable for all the three operations, distillation for two components or more, leaching based on extraction purpose and similarly absorption for interfacial balance.
2 - Question
The hi is defined as the
a) Correlating factor
b) Correction Factor
c) Striping Factor
d) Relating Factor
View Answer
Answer: a
Explanation: The correlating factor is defines as by hi, while L/V is defined as the stripping factor of systems.
3 - Question
The Smith-Brinkley (SB) method, is based on an analytical solution of the
a) Infinite-difference equations
b) Differential Equations
c) Integration
d) Finite-difference equations
View Answer
Answer: d
Explanation: The Smith-Brinkley (SB) method, is based on an analytical solution of the finite-difference equations that can be written for staged separation processes.
4 - Question
The Smith-Brinkley (SB) method, rates a column on basis of
a) Initial sequence of the stages
b) Reverse sequence of its stages
c) Forward sequence of its stages
d) Straight Sequence
View Answer
Answer: b
Explanation: The Smith-Brinkley (SB) method rates a column on basis of Reverse sequence of its stages, so to obtain top to bottom approach.
5 - Question
For a change in temperature ______ is added to tn.
a) Half
b) One fourth
c) Two third
d) Square
View Answer
Answer: a
Explanation: For a change in temperature half is added to tn and half to tm, this acts as an average value between them¬ provides accuracy.
6 - Question
Smith Brinkley method is valuable for
a) Off-line optimization
b) Reflux optimization
c) On-line optimization
d) In-line optimization
View Answer
Answer: c
Explanation: Smith Brinkley method is valuable for On-line optimization, while NR for the reflux Reflux optimization.
7 - Question
If the feed temperature is 211oK and Dew point is 70oF, then tn is
a) 68oF
b) 178oF
c) 140.5oF
d) 259.5oF
View Answer
Answer: c
Explanation: As tn= (70+211)/2 = 140.5oF.
8 - Question
If the feed temperature is 2110K and Bubble point is 70oF, then tm is
a) 68oF
b) 178oF
c) 140.5oF
d) 259.5oF
View Answer
Answer: d
Explanation: As tM= (308+211)/2 = 259.5oF.
9 - Question
Ki are determined at the
a) Top section Temperatures
b) Bottom section Temperatures
c) Middle section Temperatures
d) Right section Temperatures
View Answer
Answer: a
Explanation: Ki are determined at the Top section Temperatures, and the pressure are determined at the left and right of column respectively.
10 - Question
K’I are determined at
a) Top section Temperatures
b) Bottom section Temperatures
c) Middle section Temperatures
d) Right section Temperatures
View Answer
Answer: b
Explanation: K’I are determined at Bottom section Temperatures, this also involves calculation of K value for a given step response function.