Roll No. Total No. of Pages : 02
Total No. of Questions : 09
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B.Sc. Agriculture (2014 to 2018) (Sem.-4)
FARM POWER & MACHINERY
Subject Code : BSAG-408
M.Code : 72760
Time : 3 Hrs. Max. Marks : 60
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INSTRUCTIONS TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.
SECTION-A
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Q1. Write short notes on :
- Crankshaft
- Jointer
- Effective field capacity
- Tractive efficiency
- Back furrow
- Two stroke engine
- Scavenging
- Disc angle
- Thermostat
- Primary tillage
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SECTION-B
Q2 A four bottom 40 cm M.B. plough has a working depth of 15 cm and draft of 1500 kg. It is working at a speed of 5 km /hr. with the field efficiency of 75 %. Find :
- Unit draft
- Drawbar power
- Theoretical field capacity
- Actual field capacity.
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Q3 List the different components of forced circulation system and with the help of neat sketch explain the working of forced circulation system.
Q4 Explain the working of four stroke cycle engine with neat sketches. Compare the advantages and disadvantages of four stroke cycle engine and two stroke engines.
Q5 What are the different types of sprayers? Describe the working of knapsack type sprayer with the neat sketch.
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Q6 A chaff cutter having two knives cut dry hay at 60 rev/min giving 500 kg per hour. If the throat size is 18 cm x 6 cm, find the effective density of dry hay for a theoretical length of cut 2.5 cm.
SECTION-C
Q7 Describe the working principle of a combine with the help of a neat diagram. Name the important parts of a combine.
Q8 What is tillage? What are the main objectives of tillage? Write the differences between primary and secondary tillage tools?
Q9 Describe the process of calibration of seed drill. Calculate the seed rate/hectare of a 11 x 23 cm seed drill, whose main drive wheel is 125 cm diameter and total weight of grain collected in 20 revolutions is 0.450 kg.
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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.
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This download link is referred from the post: PTU B.Sc-Agriculture 2020 March Previous Question Papers