Paper-II

Section A
1. Write short notes not exceeding 150 words each, on any four of the following:
a. Paddy transplanter
b. Solar Photo-voltaic Panel
c. Smokeless Chulah
d. Transformer and Voltage stabilizer
e. Prony-brake dynamometer
2. Answer the following questions
a. With the help of the sketch, describe the most commonly used fuel supply system of a farm tractor. What improvements will you suggest to achieve a better performance
b. Why power tillers could not be popularized in Indian farming conditions
c. A farmer has purchased a 35 hp tractor for Rs. 50, 000. He wishes to use it for custom hiring with a 20% profit on its actual cost of operation. Assuming all reasonable data, calculate the hourly charges for the tractor
3. Answer the following questions
a. Describe the method of electricity transmission from the power house to the point of use. Give the major limitations in the rural power supply system and the ways to improve the same
b. What are the precautions to be following during installation, operation and repair of an electric motor on the farm
c. During a motor performance test, following measurements were recorded:
Voltage 220 volt.
Current 12 Amp.
Speed 1440 rpm.
Torque 12 N-m
Input Power 2.1 kW.
Calculate the following
d. Power factor
e. Horse-power output
f. Motor efficiency
4. Answer the following questions
a. Describe the safety arrangements for the operator, in the following farm-machines:
I. Power thresher
II. Hand operated chaff cutter
III. Sugarcane crusher
b. Describe different types of threshing mechanisms used in crop-threshers. Describe three most commonly used performance parameters of a power thresher
c. A 2.4 m wide disc-harrow at 3 km/h speed is ploughing a field 10 cm deep. The measured draft is 450 kg. Calculate the specific draft and draw ber horse power of the implement
Section B
5. Write short notes not exceeding 150 words each, on any four of the following:
a. Ball-mill
b. Septic Tank
c. Silage
d. Terminal Velocity
e. Modem
6. Answer the following questions
a. Describe common methods of assembling electronic circuits with, their merits and demerits
b. Describe the working principle, mounting and measuring procedure of a resistance type strain gage
c. Give the significance of the following (any
I. Churning of butter.
II. Sorting and grading of fruits and vegetables.
III. Homogenization of milk.
7. Answer the following questions
a. Describe any four applications of Microprocessors and Computers in data acquisition and control of Agricultural Engineering Processes
b. Design a farm-house for a family of four members. Include following features in the design:
I. Floor-plan details.
II. Safe drinking water supply system.
III. Layout of a wastes disposal system.
Assume all necessary data.
c. One ton cauliflower at 70 per cent moisture content is to be dried to a safe moisture content of 8 per cent. How much water is removed
8. Answer the following questions
a. Give the working principle of a greenhouse. Describe different uses of a green-house in Indian conditions
b. Describe three most common parameters of a measuring system
c. In a series AC circuit connection, an inductance of 8 ohm and a resistor of 10 ohm are joined together. A current of 6 Amp. Flows in the circuit.
Calculate:
d. The voltage across inductance, resistance and impedance
e. Phase angle between current and voltage