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1131.

The percentage of healthy grain obtained from all outlets with respect to healthy grains received from main outlet by weight is:

A.	Blower loss	B.	Sieve loss
C.	Cylinder	D.	Visible loss

1132.

For wheat, the recommended speed of threshing drum is:

A.	10-15 m/s	B.	20-30 m/s
C.	10-15 m/min	D.	20-30 m/min

1133.

For paddy, the recommended speed of threshing drum is:

A.	10-15 m/s	B.	16-25 m/s
C.	22-32 m/s	D.	25-32 m/s

1134.

The broken gram received from main outlet is due to:

A.	Less concave clearance	B.	Low speed of drum
C.	More concave clearance	D.	All are correct

1135.

The process of separation of grain from a mixture of grain and chaff is:

A.	Cleaning	B.	Winnowing
C.	Separation	D.	Grading

1136.

The material used for construction of blade of winnower is:

A.	Aluminium sheet	B.	Low grade carbon steel
C.	Mild steel	D.	High grade carbon steel

1137.

A system used to operte hand-operated winnowing fan is:

A.	Chain sprocket system	B.	V-belt pulley system
C.	Gear system	D.	All are correct

1138.

The speed of hand-operated winnowing fan varies from:

A.	100-200 rpm	B.	200-350 rpm
C.	300-450 rpm	D.	Above 450 rpm

1139.

In precision planting, the height of seed drop should be:

A.	Close to ground	B.	At least 50 cm from ground
C.	More than 50 cm from ground	D.	None of these

1140.

The main objective of tillage is:

A.	Loosing soil	B.	Breaking compact earth surface
C.	Improve aeration of soil	D.	All are correct