Download JNTUK B-Tech Agricultural 3-1 2018 Agricultural Process Engineering Question Paper

Download JNTUK B-Tech Agricultural (JNTU kakinada) 3-1 (3rd year 1st semester) 2018 Agricultural Process Engineering Previous Question Paper

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Code No: RT31353

III B. Tech I Semester Supplementary Examinations, October/November - 2018
AGRICULTURAL PROCESS ENGINEERING
(Agricultural Engineering)
Time: 3 hours Max. Marks: 70

Note: 1. Question Paper consists of two parts (Part-A and Part-B)
2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
PART ?A
1 a) With a neat sketch describe the working principle of a ball mill. [4M]
b) Write down different mixers used for dry powder and particulate food. [3M]
c) Describe the working principle of Air screen grain cleaner. [4M]
d) With a neat sketch describe the working principle of rotary dryer. [4M]
e) Write down the advantage of paddy parboiling. [3M]
f) Describe the working principle of bucket elevator. [4M]
PART -B
2 a) Define crushing efficiency. [4M]
b) Describe Bond?s law of size reduction and work index. [6M]
c) What would be the critical speed and operating speed of a ball mill having 200
cm diameter charged with 10 cm balls to grind viscous suspension.

[6M]
3 a) Define power number. What are the factors responsible for the power
requirement of fluid mixing?
[8M]
b) Describe the working principle of kneader mixer in detail. [8M]

4 a) Derive an expression for terminal velocity of spherical particle in gravitational
field.
[9M]
b) What are the design considerations for air screen cleaner?

[7M]
5 a) What is hysteresis effect? [5M]
b) Describe free moisture, bound and unbound moisture. [5M]
c) Two tonnes of paddy at 40 % initial moisture content (d.b.) is dried in a dryer
to a final moisture content of 20 % (d.b.) in 4 hours. Calculate the average rate
of moisture removal.


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[6M]
R13
SET - 1

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Code No: RT31353

III B. Tech I Semester Supplementary Examinations, October/November - 2018
AGRICULTURAL PROCESS ENGINEERING
(Agricultural Engineering)
Time: 3 hours Max. Marks: 70

Note: 1. Question Paper consists of two parts (Part-A and Part-B)
2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
PART ?A
1 a) With a neat sketch describe the working principle of a ball mill. [4M]
b) Write down different mixers used for dry powder and particulate food. [3M]
c) Describe the working principle of Air screen grain cleaner. [4M]
d) With a neat sketch describe the working principle of rotary dryer. [4M]
e) Write down the advantage of paddy parboiling. [3M]
f) Describe the working principle of bucket elevator. [4M]
PART -B
2 a) Define crushing efficiency. [4M]
b) Describe Bond?s law of size reduction and work index. [6M]
c) What would be the critical speed and operating speed of a ball mill having 200
cm diameter charged with 10 cm balls to grind viscous suspension.

[6M]
3 a) Define power number. What are the factors responsible for the power
requirement of fluid mixing?
[8M]
b) Describe the working principle of kneader mixer in detail. [8M]

4 a) Derive an expression for terminal velocity of spherical particle in gravitational
field.
[9M]
b) What are the design considerations for air screen cleaner?

[7M]
5 a) What is hysteresis effect? [5M]
b) Describe free moisture, bound and unbound moisture. [5M]
c) Two tonnes of paddy at 40 % initial moisture content (d.b.) is dried in a dryer
to a final moisture content of 20 % (d.b.) in 4 hours. Calculate the average rate
of moisture removal.


1 of 2








[6M]
R13
SET - 1
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Code No: RT31353



6 a) Describe the working principle of plate and frame filter press. [6M]
b) Describe the dry milling process of pulse milling. [5M]
c) Write down different steps of wheat milling.

[5M]
7 a) Write down the different components of belt conveyor. [6M]
b) A horizontal screw conveyer mounted on a 4cm diameter shaft has screw pitch
and diameter both equal to 30cm. Estimate its actual capacity of conveying
wheat weighing 850 kg/m
3
while operating at 150 rpm. Assume loading
efficiency to be 0.4. For a screw length of 8m what horse power motor will be
required if the total co-efficient of resistance is 2.5.
[10M]

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2 of 2
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