l.
Differentiate between the following in brief:
Naturally aspirated engine and Turbocharged engine
Centrifugal pump and Gear pump
Single plate clutch system and Dual plate clutch system
Wheel base and Track width


Differentiate between the following in brief
Indigenous and Soil turning ploughs
Ofset and Tandem disc harrow
Seed drill and Planter
Centre of resistance and Centre of pull


Differentiate between the following in brief:
Gas engine and Dual fuel engine
CNG and Bio-CNG
Anaerobic process and Aerobic process
Active solar heating and Passive solar heating


A three-bottom, 40 cm mouldboard plough is working at a
16 cm. Calculate the actual field capacity when the speed of
operation is 4·5 km/ and field performance index is 0·75.

Calculate the area covered in 8 hours for an animal drawn
seed drill which has three furrow openers 180 mm apart. The
speed of operation is 2 km/h.

A 4 m width of cut combine is travelling at 50 m/min speed. In
one minute time, 50 kg of grain was collected in the grain tank
and 60 kg of material was discharged at the rear of the machine.
Calculate the capacity of the combine on throughput basis.
Calculate the vertical soil reaction on an. implement weighing
350 kg, when a pull of 6·5 kN is exerted on it at an angle of 15deg
with the ground surface.


Discuss the major differences between the following

Biogas and Producer gas .

Biodiesel and Bio-ethanol

Single phase electric motor and Three phase electric motor

Downdraft gassifier and Updraft gassifer


2. Draw a neat f re showing different components of a fuel supply
system of a general purpose tractor and describe its working.

Draw a neat schematic diagram of a tractor power train and discuss the significance of each member of the power train.

Describe the working of an oil bath type air cleaner.

Why do general purpose tractors have larger rear wheels and
smaller front wheels
Why is a certain amount of valve clearance provided in valves of IC engines

Why do tractor rear wheels have lesser inflation pressure than
the front wheels?
Why is a breather provided in an engine?

Why does the radiator in a tractor cooling system have a pressure cap?



3. List the different types of seed and fertilizer metering mechanisms used in modern seed-cum-fertilizer drills comn10nly used in India. How does
the rate of application vary using these mechanisms?

List the different types of nozzles used for the application of agro-chemicals in manually operated sprayers used in India. How does their spray pattern differ Write about their specific use in plant protection.

What are the modifications required to run a constant speed diesel engine on dual fuel (biogas diesel) mode and why?

Write short notes on the following:
Terracer blade
Traction aids for wheel tractors

4. Calculate the volume of a biogas digester and power available from it
assuming the following
Number of animals 8
Retention time 20 days
Temperature of digestion 35 0
Dry matter consumed per animal per day= 2 kg
Burner efficiency 70%
Methane content in biogas 70%
Density of dry matter in slurry 50 kg/m^3
Biogas yield per unit dry mass 0·2 m^3 /kg
Heat of combustion of methane 28 MJ/m^3 at STP

Write short notes on the following
Solar lantern
Solar cooker
Gas engines

Write the major differences between the following
Tar and Particulate matter
Briquetting and Charring
Wind mill and Water null
Mechanical efficiency and Thermal efficiency
Total solids and Volatile solids

5.
Differentiate between the following

Analog and Digital signals

Readability and Span

True value and Accuracy

Force and Torque


Describe in brief the method of measurement calibration of the

following

Draft requirement of an animal drawn plough
Draft requirement of a tractor drawn trailed disc harrow


How are the following measurements done

Brake Horse Power of an engine using hydraulic brake
dynamometer

Calibration of a hydraulic tension dynamometer



Differentiate between the following

Osmosis and Dehydration

Equilibrium moisture content and Moisture content

Angle of repose and Angle of internal friction

Specific heat and Thermal conductivity


Write about the basic drying principle(s) involved in the following

Mechanical drying

Chemical drying

Vacuum drying

Freeze drying


6. What are the major differences between a Hammer mill and a Roller
mill?


Describe the working of cyclone separator. How is its separation factor related to the weight of a particle

Describe the basic methods of force measurement.

Which are the by-products generated during milling of paddy
Describe how the by- products can be profitably used.


7.
What are the common types of equipment used in grain handling

Discuss in brief the factors considered in their selection.

Name the different types of strain measuring equipment and describe in brief the techniques adopted using strain gauges.

Differentiate between the working principle and application of Spray and Roller driers in Milk Powder manufacture.

Describe how sugarcane bagasse can be utilized, not going as waste.


8. How are Microprocessors used in data acquisition and control of

Agricultural Engineering processes


Describe in brief the application of Multimedia and Audio-Visual aids in propagation of forestation.


Explain in brief the role of C.P.U. and memory devices in modern
computers.

Differentiate between the. working principle of sequential and
combination systems of Digital circuits