Paper-II
Section A
1. Write short notes exceeding 150 words each, on any Four of the following
a. Air Cleaners
b. Gearbox
c. Solar Still
d. Tillage
e. Animal drawn land leveling equipment
2. Answer the following questions
a. Discuss the importance of solar energy in agriculture sector. Explain any two solar powered equipment other than solar still, with the help of good sketches
b. Explain different types of water cooling systems used in L C engines. Draw neat sketches of the systems. Discuss the reasons as to why water cooling is preferred in our tractors
3. Answer the following questions
a. What are different types of sprayers? Explain manually operated air compression and hydraulic compression sprayers. Discuss the differences between them
b. With the help of a neat diagram, explain the construction and operation of a wheat thresher.
Discuss the reasons for the popularization of threshers among the farmers
4. Answer the following questions
a. Write about a tractor drawn mould board plough using neat sketch for each part. Discuss the differences in the construction and operation of mould board plough and disc plough
b. What is the function of a governor in an I. C. Engine? What are the common types of governors used? Explain any one of them with the help of a neat sketch
Section B
1. Write short notes not exceeding 150 words each, on any four of the following:
a. Hammer mill
b. Air Screen Cleaner
c. Homogenizer
d. Rice bran
e. Crystal oscillator
2. Answer the following questions
a. What is meant by single effect and multiple effect evaporation? Illustrate with neat line diagrams and neat sketches explaining any two types of evaporators
b. Explain the frictional, thermal and aerodynamic properties of agricultural materials. Discuss their application in agricultural processing
3. Answer the following questions
a. Discuss about the different packaging materials used in dairy industry. Explain the importance of packaging of fruits and packaging materials used for them. Indicate the various economic factors involved in packaging processes
b. Write about the hardware components of a computer system
4. Answer the following questions
a. What is the function of a rectifier? With the help of neat circuit diagrams, explain the principle of operation of different types of rectifiers. Discuss their advantages and disadvantages
b. Explain the construction and operation of a drum dryer using neat sketch. Discuss the merits and demerits of drum drying over spray drying of milk