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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. Which test is used to measure the resistance to flow of the lubricating oil?
2. Which of the following is a semi fluid lubricant, used for slow moving parts?
3. Forced feed lubricating system is found suitable in ___________
4. Use of very thin lubricating oil in lubrication system causes ___________
5. What is Poiseuille’s law?
6. 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?
7. In force feed system of lubrication, the valve stem is lubricated through ___________
8. In forced feed system of lubrication, the piston pins are lubricated by means of hole drilled in ___________
9. 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.
10. 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 ________
11. 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?
12. Which test is used to indicate the fire hazards of petroleum products?
13. In which type of filter does the entire quantity of oil is forced to circulate through it before it enters the engine?
14. Lubrication is needed in engines because of ___________
15. The pump used in forced feed system of lubrication is ___________
16. Which of the following is lubrication theory?
17. What is viscosity index (V.I.)?
18. In between which years did hydraulic controls and three-point linkage were developed?
19. 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.
20. 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.
21. In forced feed system of lubrication, the type of filter used ___________
22. When did the term ‘tractor’ appeared first on record?
23. Which of the following is not a system of lubrication used on stationary engines, tractor engines and automobiles?
24. The complete path of power from the engine to the wheels is known as _______
25. 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?