1. Which share has a detachable piece?
a) Slip share
b) Slipnose share
c) Shin share
d) Bar point share
Discussion
Explanation: Slipnose share is a share in which the point of share is provided by a small detachable piece. It has the advantage that share point can be replaced as and when required.
2. Which mouldboard has gentle curvature which lifts and inverts the unbroken furrow slice?
a) Slat type
b) General purpose type
c) Sod or breaker type
d) Stubble type
Discussion
Explanation: Sod or breaker type is a long mouldboard with gentle curvature which lifts and inverts the furrow slice. It turns over thickly covered soil. This is very useful where complete inversion of soil is required.
3. Gunnel is which face of the share that slides along the furrow wall?
a) Vertical
b) Horizontal
c) Centre
d) Parallel
Discussion
Explanation: Gunnel is the vertical face of the share which slides along the furrow wall. It takes the side thrust of the soil and supports the plough bottom against the furrow wall.
4. Which share has the disadvantage of replacing the entire share if it gets worn out?
a) Bar point share
b) Shin share
c) Slipnose share
d) Slip share
Discussion
Explanation: Slip share is one piece share with curved cutting edge and no additional parts. It is a common type of share used by the farmers. It is simple in design, but has a disadvantage that the entire share has to be replaced if it is worn out due to constant use.
5. Horizontal suction varies according to ______
a) Line of pull
b) Size of plough
c) Draft
d) Centre of power
Discussion
Explanation: It is the maximum clearance between the landside and a horizontal plane touching point of share at its gunnel side and heal of land side. This suction helps the plough to cut the proper width of furrow slice. This clearance varies according the to the size of the plough, which is the distance from wing of the share to the line joining the point of share and heel of landside.
6. Which plough is used is used to break Hard pan or plough sole layer of soil?
a) Subsoiler
b) Chisel plough
c) Rotavator
d) Rotating auger plough
Discussion
Explanation: Chisel plough is a plough used to cut through hard soils by means of a number of narrow tynes. It is useful for breaking hard layers of soil just below the regular ploughing depth.
7. How is effect of speed on draft expressed?
a) Ds = D0 + KS2
b) Ds = D0 – KS2
c) Ds = D0 * KS2
d) Ds = D0 / KS2
Discussion
Explanation: Draft increases with increase in speed in most of the tillage implements. This may be due to rapid acceleration of any soil that is moved appreciably.
8. In order to provide furrows at all times on the right-hand side of the plough which method/methods is/are used?
a) Gathering
b) Casting
c) Gathering and casting
d) None of the above
Discussion
Explanation: Whenever a plough works round a strip of ploughed land, it is said to be gathering, whereas whenever a plough works round a strip of unploughed land, it is said to be casting.
9. What is the depreciated value after n years using declining balance method?
a) D = P(1-r)n
b) D = P(1/r)n
c) D = P(1*r)n
d) D = P(1+r)n
Discussion
Explanation: In this method, a uniform rate is used for each year to the remaining values, including salvage value of the machine. Depreciation amount is different for each year, during machine life.
10. What is the Break Even Point?
a) Uc = \(\frac{Fc}{x}\)*Ox
b) Uc = \(\frac{Fc}{x}\)+Ox
c) Uc = \(\frac{Fc}{x}\)-Ox
d) Uc = Fc*x*Ox
Discussion
Explanation: When a common variable affects the cost of two methods, the value of variables at which the cost of use for both the method will be equal. This value of variable is known as break-even point. At break-even point unit cost of operation of big and small machine will be same.