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Iab 140:Farm Power And Machinery Question Paper

Iab 140:Farm Power And Machinery

Course:Bachelor Of Science

Institution: Kaimosi Friends University College question papers

Exam Year:2017

KAIMOSI FRIENDS UNIVERSITY COLLEGE

UNIVERSITY MAIN EXAMINATIONS
2017/2018 ACADEMIC YEAR

FIRST YEAR SECOND SEMESTER EXAMINATIONS FOR THE DEGREE OF BACHELOR OF SCIENCE

COURSE CODE:IAB 140

COURSE TITLE:FARM POWER AND MACHINERY

15TH DECEMBER 2017

2 HOURS

INSTRUCTIONS TO CANDIDATES

Answer question ONE( COMPULSORY) and any other TWO questions

KAFUCO observes ZERO tolerance to examination cheating

QUESTION ONE

a. Write brief notes on the following systems of tillage,explaining what they entails and their benefit to the farmer. 6 marks

i. Conventional tillage
ii. Conservational tillage

b. State the main function of the following parts of a mouldboard. 2 marks

i. Disc Coulter
ii. Landside

c. Briefly explain four situations which will compel you choose animal/ human power instead of mechanized power. 6 marks

d. State four factors that determine the final tilth when a rotary cultivatoris used. 4 marks

e. Describe any two types of fertilizer distributors and explain how they dispense seeds/ fertilizer and Normal adjustments. 6 marks

f. Give two purposes each for using the following implements in tillage operations. 4 marks

i. Chisel plough
ii. Mole plough

g. A spinning disc broadcaster gave a spread of 10 M.How far does it have to travel in order to cover 0.5hacteres 2 marks

QUESTION TWO

a. State any four types of grain losses encountered during the operation of combine harvester. 4 marks

b. Give 3 major differences between petrol and diesel engine. 6 marks

c. Distinguish between a seed drill and a planter,mentioning three major operational differences. 6 marks

d. Give four advantages of disc plough over mouldboard plough in primary cultivation. 4 Marks

QUESTION THREE

a. Briefly discuss the following sources of power indicating their uses at the farm level and their limitations. 6marks

i.Solar

ii. Biomass

b. A combine harvester may be considered a mobile factory.state four different functions that a combine harvester performs in one operation 4 marks

c. Explain three operational problems of a combine harvester and state one adjustment for proper performance of the combine harvester for each problem mentioned. 6 marks

d. Briefly explain factors that affect the performance of a combine harvester. 4 marks

QUESTION FOUR

a. i) Spray tank is usually made of plastic or fibre glass,explain the major characteristics of these materials that make them good for construction of spray tank. 4 marks

ii. Give two major differences between a disc and mouldboard ploughs. 2 marks

b. State one main function of each of the following parts of a tractor. 3 marks

i. P.T.O

ii.Clutch

iii. Differential

c. Give two reasons for using each of the following implements during tillage operations. 4 marks

i. Roller

ii. Rodger

d. In a calibration experiment,a single-row maize planter was found to dispense 200 seeds on rotating the ground wheel through 30 revolutions.If the ground wheel has a diameter of 70 cm,calculate:

i. The intra row spacing of the maize seeds

ii. The plant population per hectare if the inter row spacing is 75cm

iii. The seed rate per hectare if one maize grain weighs 0.4grams

iv.List four assumptions that one must take for the results to fit into real farm conditions. 7marks

Iab 140:Farm Power And Machinery Question Paper

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