..
SECTION A
Describe farm mechanization poblems. and scope with respect to. mountain farming.
1.(b)Calclte tension Tand T2 of i a V-belt .transmitting 7,5 kw power with _16 m/s speed Take arc of contact 125 and value of k -0·4. 8
l.(c)qiscuss bout wind energy conversion system (WECS) with 1ine. diagram: 8
1.(d)Calculate the consumptfon of gas in ·cubic.metre per.bhp-hour and .air standard effidency if the clearance volume of the engine. is· 22% of the SVC))t volume The relative efficiency .
on JHP basis is 65% and mechanical efficiency is 75% with calorific-value of the gas.3550. kcal/cu meter.8
What is the principle of generatin of voltage·? Describe. working of four point starter with .
the help of diagram. 8 Describe the working principle of a combine with line diagram. 10
The line of pull on an implement is 15..bove the horizontal and i,s in vertical plane which is at an angle of 10with the direciion of travel. Compute the draft and side draft for a pull of 12 kN. Also .compute drawbar power required at 4·5 km/h.
What are the different types of seed metering mechanisrps Explain the working of most suitable metering mechanism of seed drills used in India.10

2.(d)Following data are given for a family biogas plant suitable for the output of 12 cows, the . retention time is 32 days, temperature 26°C, dry matter consumed per day is 6 kg, biogas yield is 0-38 m3 per kg. The efficiency of the bm:ner is 75%.. methane proportion is heat of combustjon of methane is 35 MJ/m3, density of fluid mass 30 kg/m3 . Calculate volume of biogas digester and power available ·from the digester. 10

Discuss· various methods for obtaining energy from biomass and which one is· the most suitable economically.10
The total power input to the impeller-cutter head on a PTO driven flail chopper is 20 kW and ·the theoretical length of cut is 12 mm. The division of power is a follows cuttin·g accelerating .chopped -material friction of chopped material in · housing and blowing air If the tractor engine speed. is increased what would be the new total power input to the impeller-cutter· head the new theoretic'al cutting length 10

3.(c)A tractor operating with sowing equipments at a speed of 3·5 km/h develops a drawbar pull of 1250kg.· Calculate .Speed in metre ·per second woik done kg-ni/:min Drawbar horse power Horse power hour of'drawbar work per eight hours a day the change in ·speed required to increase the drawbar horse power· to 22. 10
How_ does solid injection differ from air injection D..scuss different methods of solid injection. 10

Explain the different types of potato harvesting machines available in India and ..hich type is most suitable for our condition 10
A mower has drive wheels of 220 mm radius and speed of crank is 600 rpm. The mower is attached with tractor ·which is moving at constant speed of 2·4 km/h. Calculate the increase or decrease in speed of the mower to maintain s..e speed of crank if the· speed ratio between the crank wheel and land wheel is changed to 25 2. 10
Describe the working principle of self propelled reaper-cum-binder.

A horizontal axis wind rotor of 4·5 m diameter is used to lift water in the farm. Calculate the theoretical power-generated by wind rotor and wind po_wer, if average wind velocity is
20·5 km/h and air density is 1 · 28 kg/m3 Assume data if necessary.
SECTION
Describe how actual p-V diagram of engine differs from the ideal air standard diesel cycle. 8

What is the binary nu..ber system and how does it compare to the decimal number system write with example 8

Design a LSU dryer of 5 tonnes.holding capacity with paddy at 16% moisture content · (w.b). Use the following data CT9ss section of the dryer.= 1·4into1·4 m2; Air velacity in the ·air ports 5 m/sec; Pitch of the air ports= 50 cm; Row to "row spacing 25 cm; Grain residence time 30 minutes.
Explain the computer applications in proce.ss equipment design. ·

discuss working . of regeration . system with .help of the diagram. 8

What is the human computer interface .8
6.(b)Describe the constr:uctional features of bucket elevator with di..gram showing forces acting
on the grain.
What is difference between baffle type drier and LSU type drier 1

Design a steel conveyor with the grain moving in· the open top to operate at a 30° inc1irie .·
and elevate grain ·to a height of 6 m at a rate of 45 m3per hour if flight speed is 32m per minute. Assume other necessary data· if required. ·

7.(a)What is structured programming and also explain its app1ication.

Write design of cyclone separator with schematic diagram showing relative recommendecf.
Explain actual vapour compression cyc1e with the help.
of T-pie diagram.
7.(d)Describe piezoelectric transducers use with their advantages.
8. Differentiate between fol1owing
Fourth-generation and fifth-generation computers
8.(b)HTST Pasteurizer and Batch type Pasteurizer
8.(c)Single phase and poly-phase motor
8.(d)Hammer mi11 and attrition mill
8.(e)Gravity separator and pneum..tic separator