IFo S Serial-No.

ENGINEERING
Paper-II

(lime Allowed: Three Hours) (Maximum Marks: 200)
INSTRUCTIONS
Candidates should attempt Question Nos. J and 5 'which· are compulsory, and any THREE of the ·remaining questions s.clecting at'least ONE question froin each. Section. AU questions carry equal marks. Marks allotted to each part of a question is· indicated against cacho Answers must be written in English only. Assume suitable data if considered necessary and indicate the same clearly in your: answer. Unless indicated otherwise, symbols, notations and abbreviations have their usual meanings.

SECTION-A
Answer any FOUR of tne following (not exceeding 150 words
(a)Differentiate between the following:
(i)Raspbar cylinder and spike tooth cylinder.
Hollow cone nozzle and Solid .cone nozzle.
Tilt angle and Disc angle.
Helical gear and Herringbone gear.
Coefficient of friction and Coefficient of
traction. 10
Differentiate b,etween the following
Active Solar heating and Passive Solar heating.
Solar altitude and Solar azimuth.
Thenno.chemical conversion"and Biochemical converSIon.
Total solids and Volatlle solids.
Floating drum and Fix'ed dome type biogas plants. 10
Discuss the effects of following in brief
Higher crop moisture content on cylinder loss
from power thresher.
Tandem wheel arrangement of drive wheels of a tr,actor on tractive ability_ 10
What are the differences between
A root plough and a grubber?
A carryall scraper and a buckscraper? 10
List the major differences between
Circular saw and Chain saw..
A blade terracer and a land plane.10
write in brief:
wil there be any side draft occurring during operation of a landem disc harrow/ if yes,specify reasons.
why is the centure of resistance not a fixed point on a mould board plough?
A tractor with "a total weight 28·5 kN has a front wheel reaction of 9·0 kN when it is placed. on a . horizontal surface. The wheel base is 2083 rom. The tractor is pulling a drawbar load of 12 kN.. The pull is parallel to the ground and the drawbar height is 580 mm. Calculate the weight transfer. Also discuss the effect of weight transfer on front and rear wheel reactions. 10
A petrol engine working on Otto cycle has a clearance volume of 20% of the stroke volume. The engine consumes 8·17 litres ofpetrol per hour when developing 32 IHP. The specific gravity of petrol is 0'76 and its calorific value is 10,500 kCalJ kg. Determine indicated thermal efficiency of the engine taking K 1·4 for air. 10
Draw a neat sketch showing details ofsliding mesh type gear box having four forward and one reverse speed and explain its working. 10
Draw a neat figure showing components of a Deenbandhu type biogas plant.. How will you decide its major dimensions if it is to be used to provide biogas to a 5 hp dual-fuel CI engine to be used for five hours daily? 10
Write short notes on
Absorber .plates for air collectors.
Flow paths in liquid tYPe .collector arrays. 10
What are the different unit 'operations performed in raising potato crop in a totally mechanized farm How will you estimate energy requirement in harvesting of potato' in such a farm 10
Draw a neat figure showing a savonious rotor and arrieus rotor type wind mills. 'Discuss th.eir merits and demerits. 10 .
SECTION-B
5. Answer_any FOUR of the following in not more than ISO words each
Differentiate between the' following

Equilibrium moisture content and Equilibrium relative humidity.

Capacitance and Thermal cap.acity.

Differentiate between the following:-10

Linear transducer and Non-linear transducer.

Deflection mode and"Null mode.

Differentiate between"a parallel port and USB port and discuss their uses in a PC. 10

Differentiate between 10·
A burr mill and a hammer mill.
A disc type huller and a type huller.
Write the equations for capacity of a belt conveyor, a chain cQnveyor and a screw conveyor and describe the symbols used. 10

6. Define following terms
Sensitivity
Hysteresis
Span
Calibration
. (v)Linearity. 10
Draw a process flow diagram sho'wing the differeJ.1t operations performed i!1 a modern seed'processing piant indicating the. equipment" needed and their selection criteria. 10
Draw a neat sketch of a hydraulic brake dynamometer az:td describe its working. 10
Draw neat figure showing a Wheatstone bridge and discuss deflection method and.null nlethod of application in the bridge. 10
7.(a)Draw neat figure showing of mounting of strain gauges for the n1casurement of tensile, compressive and shear loads. Also discuss selection ofgauges for above applications. 10
Discuss the different types of automatic recording mechanisms used in Ineasuring" insttuments. 10
Briefly discuss the utilisation of sugarcane. bagasse in different fonns in modern agro-bssed industries. 10 .
List the different conlponents of a seed cleaning ll1achine and discuss the factors affecting performance of a seed cleaner. 10
.8.(a)Write short notes on
(i)HTST pasteurizer.
Vacuum type milk bottle filler. 10
Draw a neat 'schematic diagram indicating various steps' ina modern rice mill for production of parboiled rice and discuss the factors affecting a rice mill capacity. 10

Discuss in brief working of an LSU drier. 10

,Draw neat sketch of a cyclone separator and discuss. its working principle. 10