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
- a) X
- b) Y
- c) Z
- d) A
Q.12.
Find the representation of critical moisture content value
- a) A
- b) B
- c) Z
- d) Y
Q.13.
Find the equilibrium content value
- 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