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Farm Machinery Practice Test: Lubrication System and Tractor’s Classification
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Lubrication System and Tractor’s Classification topics include: Lubrication system, tractor classification details, tractors types, numerical problems on tractor parameters, forced feed system principles and tractors selection process. Here are some lubrication systems used in tractors: Splash lubrication system: In this system, a dipper at the bottom of the connecting rod picks up oil from the oil sump or pan and moves it up to the engine components. Force feed lubrication system: This system uses a gear type pump driven by the camshaft to generate pressure and ensure oil reaches all... Show more
Farm Machinery Practice Test: Lubrication System and Tractor’s Classification
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25 Questions

1. In force feed system of lubrication, the valve stem is lubricated through ___________
2. A tractor has belt speed of 1000 m/min at normal engine speed. A feed mill has a recommended speed of 2100 rev/min. Find the size of pulley, needed on the Feed mill.
3. Which test is used to indicate the fire hazards of petroleum products?
4. If it desired to obtain 160 kgm torque at the transmission output shaft, what gear ratio would be necessary if transmission efficiency is 96% and the input torque is 15 kg m?
5. In between which years did power take off was introduced?
6. In forced feed system of lubrication, the type of filter used ___________
7. A tractor having weight as 1500 KGF is brought to a speed of 10 KMPH in 10 seconds by applying a uniform acceleration. Calculate initial fore on tractor.
8. What is viscosity index (V.I.)?
9. In forced feed system of lubrication, the connecting rod bearings are lubricated through the ___________drilled holes in
10. Use of very thin lubricating oil in lubrication system causes ___________
11. The width of belt is 15 cm and maximum tension per cm width is not to exceed 12 kg. T1/T2=2.25. Diameter of driver=1m and it makes 220 rpm. Find the horse power that can be transmitted.
12. In forced feed system of lubrication, the piston pins are lubricated by means of hole drilled in ___________
13. Which of the following is not a system of lubrication used on stationary engines, tractor engines and automobiles?
14. When did the term ‘tractor’ appeared first on record?
15. What HP of tractor is suitable for a 40 hectares farm?
16. Lubrication is needed in engines because of ___________
17. A 2-wheel drive 35 HP tractor has 1.5 m rear wheel diameter. The engine runs at 1200 rev/min. The total reduction of speed is 30:1. Find the travelling speed of the tractor in km/h and tractive force at each driving wheel.
18. A towed wheel with rolling radius of 0.35 m and normal load of 500 N requires a horizontal force of 50 N to move it forward. The vertical soil reaction against the wheel can be considered to act ahead to vertical line passing through the wheel at a distance of ________
19. The pump used in forced feed system of lubrication is ___________
20. While turning a 4-wheel tractor equipped with the Ackermann steering mechanism the axis of the inner front wheel makes an angle of 45°, whereas the angle made by the axis of the outer front wheel is 30° with horizontal line parallel to the front axle. The kingpins of the axle are 1300 mm apart. The spindle genths are essentially zero. What should be the wheel base of the tractor if there is no slippage of any of the wheels?
21. In forced feed system of lubrication, the oil pressure should be almost ___________
22. A 2-wheel drive 35hp tractor has 1.5 rear wheel diameter. The engine runs at 1200 rev/min. the total reduction of speed is 30:1. Find the travelling speed of the tractor in km/h and the tractive force at each driving wheel.
23. A tractor has the following specifications:
i) Engine speed = 2000 rev/min
ii) Rear wheel diameter = 115 cm
iii) Travel speed = 3 km per hour
What will be the ratio between crankshaft speed and rear axle speed?
24. Find the gear ratio of a tractor of its final drive of tractor has 1.2 m tractor wheel and forward speed of 5km/h. When engine is running at 1000 rpm if reduction in transmission is 3:1
25. A tractor with a mass of 1600 kg develops a maximum tractive effort of 3000 N in top gear on a concrete surface. The total rolling resistance is 160 N. If the gradient angle is defined as the angle that the inclined plane makes with the horizontal, the maximum gradient can be negotiated by the tractor is _________