KNEC KCSE Revision Notes Agriculture Objective Type Questions
1. Land side helps to resist side pressure exerted by furrow slice
11 on the mould board plough True / False
12 In mould board plough land side helps to resist side pressure
2. exerted by furrow slice True / False
3. Which one of the following is an accessory to mould board plough?
4. a. Share b. mould board c. frog d. jointer
5. Horizontal suction allowed in mould board plough is
6. a. 5 mm b. 10-12 mm c. 15 mm d. 20 mm
7. Horizontal component of pull is called
8. a. Pull b. draft c. unit draft d. None
9. Total draft of a 4 bottom mould board plough is 1600 kg.
What is the draft of a single bottom
a. 1600 kg b. 1200 kg c. 800 kg d. 400 kg
In disc ploughs tilt angel varies between
10. a. 15-25° b. 25-35° c. 35-45° d. 45-50°
11 Width of operation of a 2 x 30 cm disc
plough is
11. a. 30 cm b. 60 cm c. 90cm d. 120 cm
11 Disc angle in a standard disc plough varies from
12. a. 25-35 ° b. 40-45 ° c. 45-55 ° d. 55-65 °
13. 13. In stony and rocky fields mould board plough works better
11 than disc plough true/false
14. A disc plough can be forced to penetrate into the soil which is too hard
15. 15. and dry for working with a mouldboard plough. true/false
16. 16. Disc plough leaves the soil in rough and more cloddy condition than that of mouldboard plough. true/false
17. Differentiate rotary tiller and chisel plough.
18. A levelling board is attached to the rear side of the unit for levelling the tilled soil.
True / False
19. Deep tillage shatters compacted sub soil layers and aids in better infiltration and storage of rainwater in the crop root zone. True / False
20. Chisel ploughing reduces the bulk density of soil True / False
21. Rotary tiller combines both primary and secondary tillage Operations True / False
22. Rotavator combines primary and secondary tillage operations
i. True / False
23. Compacted areas prevent the natural drainage of the soil and
24. also inhibit the passage of air and nutrients through the soil structure
True / False
25. A country plough cuts a trapezoidal furrow having 8 cm top width and 3 cm bottom width.
The depth of furrow is 8 cm. assume average soil resistance to be 0.6 kg/cm2/.
Calculate the pull exerted by the bullocks if the chain forms an angle of 30° with horizontal
26. Two bullocks weighing 400 kg each are pulling an implement with a speed of 3 km/h.The depth of furrow is 8 cm.
Assume soil resistance to be 0.6 kg/cm2
Calculate the pull exerted by bullocks if the chain forms an angle of 30° with the horizontal
27. A three bottom 40 cm mouldboard plough has a working depth of 15 cm, draft is 1200 kg, fuel efficiency is 80 5, and working speed is 4 km/h.
calculate
a) Unit draft
b) Power required
c) actual field capacity
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Wooden Plough
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