Engineering Questions with Answers - Multiple Choice Questions

# Separation Processes MCQ’s – Desublimation

1 - Question

If the amount of sublimate per tube is m=2kg
Time to reach the maximum thickness of N is t=5h
The size of heat exchanger is S=100kg/h
Calculate the number of tubes required.
a) 100
b) 200
c) 250
d) 300

Explanation: The number of tubes required N= S*t/m, hence N=250.

2 - Question

If the amount of sublimate per tube is m=0.4kg
Time to reach the maximum thickness of N is t=5h
The size of heat exchanger is S=100kg/h
Calculate the number of tubes required.
a) 100
b) 200
c) 250
d) 300

Explanation: The number of tubes required N= S*t/m, hence N=200.

3 - Question

If the amount of sublimate per tube is m=1.2kg
Time to reach the maximum thickness of N is t=5h
The size of heat exchanger is S=100kg/h
Calculate the number of tubes required.
a) 100
b) 200
c) 250
d) 300

Explanation: The number of tubes required N= S*t/m, hence N=300.

4 - Question

If the amount of sublimate per tube is m=5kg
Time to reach the maximum thickness of N is t=5h
The size of heat exchanger is S=100kg/h
Calculate the number of tubes required.
a) 100
b) 200
c) 250
d) 300

Explanation: The number of tubes required N= S*t/m, hence N=100

5 - Question

If the amount of sublimate per tube is m=2kg
Time to reach the maximum thickness of N is t=5h
The size of heat exchanger is S=200kg/h
Calculate the number of tubes required.
a) 190
b) 560
c) 500
d) 300

Explanation: The number of tubes required N= S*t/m, hence N=500.

6 - Question

If the amount of sublimate per tube is m=2kg
Time to reach the maximum thickness of N is t=3h
The size of heat exchanger is S=100kg/h
Calculate the number of tubes required.
a) 100
b) 150
c) 250
d) 300

Explanation: The number of tubes required N= S*t/m, hence N=150.

7 - Question

If the amount of sublimate per tube is m=4kg
Time to reach the maximum thickness of N is t=8h
The size of heat exchanger is S=100kg/h
Calculate the number of tubes required.
a) 100
b) 200
c) 250
d) 300

Explanation: The number of tubes required N= S*t/m, hence N=200.

8 - Question

If the amount of sublimate per tube is m=2kg
Time to reach the maximum thickness of N is t=5h
The size of heat exchanger is S=50kg/h
Calculate the number of tubes required.
a) 100
b) 150
c) 250
d) 350

Explanation: The number of tubes required N= S*t/m, hence N=150.

9 - Question

If the amount of sublimate per tube is m=2kg
Time to reach the maximum thickness of N is t=5h
The size of heat exchanger is S=200kg/h
Calculate the number of tubes required.
a) 100
b) 900
c) 750
d) 500

Explanation: The number of tubes required N= S*t/m, hence N=500.

10 - Question

If the amount of sublimate per tube is m=2kg
Time to reach the maximum thickness of N is t=2h
The size of heat exchanger is S=100kg/h
Calculate the number of tubes required.
a) 100
b) 200
c) 250
d) 300