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691.

A device mould to cut the furrow slice vertically from a land ahead of bottom is:

A.	Jointer	B.	Coulter
C.	Gunnel	D.	None of these

692.

A part of mould board plough which lifts, turns and break furrow slice is:

A.	Share	B.	Mould board
C.	Landside	D.	Jointer

693.

A wheel used for maintaining uniform depth of ploughing in different soils is:

A.	Transport wheel	B.	Land wheel
C.	Furrow wheel	D.	Gauge wheel

694.

The part of MB plough that resists the side pressure exerted by the furrow slice on the mould board is:

A.	Mould board	B.	Gunnel
C.	Landside	D.	Frog

695.

In MB plough, the perpendicular distance from wing of share to the line joining the point of the share and heel of landside is:

A.	Width of furrow	B.	Size of plough
C.	Plough width	D.	All are correct

696.

The size of mould board plough is expressed by:

A.	Width of cut	B.	Depth of cut
C.	Size of furrow	D.	Plough width

697.

A point at which the resultant of all horizontal and vertical forces acts is:

A.	Centre of gravity	B.	Centre of resistance
C.	Centre of pull	D.	Line of pull

698.

A straight line passing through the centre of the pull, the point of hitch and the centre of resistance are:

A.	Centre of gravity	B.	Centre of resistance
C.	Centre of pull	D.	Line of pull

699.

According to Colling, the draft of mould board plough on the ground is:

A.	34%	B.	18%
C.	48%	D.	Above 48%

700.

According to colling, the draft of MB plough due to furrow slice is:

A.	34%	B.	48%
C.	68%	D.	Above 68%