Farm Machinery Design and Operation MCQs

25 Score: 0 Attempted: 0/25 Subscribe

1. : The draft of an implement is defined as:
(A) Vertical force exerted by soil on implement
(B) Horizontal force required to pull implement through soil
(C) Torque produced by engine
(D) Weight of implement

2. : The field capacity of a farm machine is the product of:
(A) Speed × Draft
(B) Speed × Working width × Field efficiency
(C) Power × Time
(D) Draft × Depth

3. : Effective field capacity is always:
(A) Greater than theoretical capacity
(B) Equal to theoretical capacity
(C) Less than theoretical capacity due to field losses
(D) Independent of efficiency

4. : The optimum field efficiency of a tractor-drawn seed drill is around:
(A) 30–40%
(B) 50–60%
(C) 65–75%
(D) 85–95%

5. : The primary factor affecting draft of tillage implement is:
(A) Soil moisture and texture
(B) Tractor horsepower
(C) Working speed only
(D) Shape of tractor wheels

6. : The unit draft of an implement is expressed as:
(A) N
(B) N/cm² of soil cross-sectional area
(C) N/m² of land
(D) kW/ha

7. : The maximum safe wheel slip of tractors in the field should be:
(A) Less than 5%
(B) 8–12%
(C) 15–20%
(D) More than 25%

8. : A rotavator is operated at a recommended speed of:
(A) 1–2 km/h
(B) 3–5 km/h
(C) 6–8 km/h
(D) More than 10 km/h

9. : The working width of a disc harrow depends on:
(A) Number of discs and disc diameter
(B) Tractor horsepower
(C) Soil type
(D) All of the above

10. : In design of plough bottoms, the share angle is provided to:
(A) Reduce soil resistance and improve penetration
(B) Increase width of cut
(C) Increase soil inversion
(D) Prevent slippage of implement

11. : The material commonly used for making plough shares is:
(A) Mild steel
(B) High carbon steel
(C) Cast iron
(D) Aluminium alloy

12. : The performance of a thresher is measured in terms of:
(A) Grain output per hour
(B) Cleaning efficiency and grain damage
(C) Fuel consumption
(D) All of the above

13. : The seed to seed spacing in a row is primarily controlled by:
(A) Furrow opener
(B) Seed metering mechanism
(C) Seed tube diameter
(D) Tractor speed

14. : The metering device commonly used in seed drills for cereals is:
(A) Cup feed
(B) Fluted roller
(C) Cell feed
(D) Vacuum metering

15. : The power requirement of tillage implements is directly proportional to:
(A) Draft × Speed
(B) Width × Time
(C) Depth ÷ Width
(D) Fuel efficiency only

16. : The functional component of a combine harvester that separates grain from straw is:
(A) Cutter bar
(B) Threshing drum
(C) Cleaning sieve
(D) Straw walker

17. : For good seedbed preparation, the depth of ploughing with an MB plough is generally:
(A) 5–10 cm
(B) 10–20 cm
(C) 20–30 cm
(D) More than 40 cm

18. : The working speed of a combine harvester is usually:
(A) 1–2 km/h
(B) 3–5 km/h
(C) 6–8 km/h
(D) 10–12 km/h

19. : The draft of a tillage implement increases with:
(A) Increase in depth of operation
(B) Increase in speed
(C) Increase in soil resistance
(D) All of the above

20. : A cultivator is classified as:
(A) Primary tillage implement
(B) Secondary tillage implement
(C) Sowing implement
(D) Harvesting implement

21. : In the design of a thresher, concave clearance is adjusted to control:
(A) Seed damage and threshing efficiency
(B) Grain size
(C) Seed rate
(D) Straw length

22. : The optimum speed ratio of ground wheel to seed metering mechanism should be:
(A) 1:1
(B) 2:1
(C) 3:1
(D) Variable always

23. : The term “overturning moment” in tractors is related to:
(A) Lateral stability on slopes
(B) Engine power output
(C) Field efficiency
(D) Implement draft

24. : The functional component of a chaff cutter that cuts fodder into pieces is:
(A) Flywheel with knives
(B) Seed metering wheel
(C) Concave and drum
(D) Shear plate only

25. : The effective field efficiency of a combine harvester is generally:
(A) 30–40%
(B) 40–50%
(C) 60–70%
(D) 80–90%