Q.1
Find the time taken to drytoof moisture (dry basis) if critical moisture content is 30%. If the weight of the wet solid is 5 kg and the product of area and the constant rate is 0.5 kg/min.
  • a) 20 sec
  • b) 40 sec
  • c) 60 sec
  • d) 80 sec
Q.2
Find the period if the initial and the final moisture content areand 40%. Also the critical moisture content is 30%.
  • a) Constant rate period
  • b) Falling rate period
  • c) Unsaturated period
  • d) None of the mentioned
Q.3
Find the period if the initial and the final moisture content areand 20%. Also the critical moisture content is 30%.
  • a) Constant rate period
  • b) Falling rate period
  • c) saturated period
  • d) None of the mentioned
Q.4
At the constant drying period of a batch process, the rate of drying varies accordingly.
  • a) True
  • b) False
Q.5
Find the change in moisture content from the given data
  • a) 0.21
  • b) 0.12
  • c) 0.48
  • d) 0.84
Q.6
Find the initial moisture content for the batch process if the final moisture content is(dry basis) and the constant moisture content is 40%. (Includes constant and falling rate period)
  • a) 35
  • b) 30
  • c) 60
  • d) None of the mentioned
Q.7
Find the final moisture content for the batch process if the initial moisture content is(dry basis) and the constant moisture content is 40%. (Includes constant and falling rate period)
  • a) 45
  • b) 50
  • c) 60
  • d) None of the mentioned
Q.8
Falling rate period of a batch process starts at
  • a) Saturated drying surface
  • b) Unsaturated drying surface
  • c) Both unsaturated and saturated region
  • d) None of the mentioned
Q.9
If the time taken for the moisture removal is obtained from the formula
  • a) True
  • b) False
Q.10
There will be a change in the rate of drying of a batch process after the constant drying process.
  • a) True
  • b) False
Q.11
Find the Constant rate representation
Questionmass-transfer-questions-answers11.jpg
  • a) X
  • b) Y
  • c) Z
  • d) A
Q.12
Find the representation of critical moisture content value
Questionmass-transfer-questions-answers12.jpg
  • a) A
  • b) B
  • c) Z
  • d) Y
Q.13
Find the equilibrium content value
Questionmass-transfer-questions-answers13.jpg
  • a) A
  • b) B
  • c) C
  • d) Y
Q.14
Falling rate period of the batch drying curve = _______ + ___________
  • a) Internal movement, unsaturated surface drying
  • b) Internal movement, saturated surface drying
  • c) External movement, unsaturated surface drying
  • d) External movement, saturated surface drying
Q.15
Find the region if the final and the initial moisture content areand(Dry basis) and the critical moisture content is 45%.
  • a) Constant rate
  • b) Falling rate
  • c) Internal movement
  • d) None of the mentioned
0 h : 0 m : 1 s