This set of Farm Tractor Multiple Choice Questions & Answers (MCQs) focuses on “Lubrication Methods”.
1. How does the splash lubrication system work?
a) To splash lubricant
b) To pour lubricant
c) To ooze lubricant
d) To form a layer of lubricant
View Answer
Explanation: The lubricant is splashed into the engine components such as piston, connecting rod, bearings etc. The connecting rod’s big end has a dipper which splashes the oil while in its downward motion.
2. What is the process of cleaning of engine dirt using oil?
a) Flushing
b) Cleaning
c) Removing
d) Winding
View Answer
Explanation: The flush oil is used to remove away the dirt and sludge in the engine. This can be done by removing old oil and running the engine filled with flush oil. Then it is removed and good grade oil is topped up.
3. What is force-feed system of lubrication?
a) Pressurized system of delivery
b) Using an external source of force
c) Mechanically operated lubrication system
d) Electrically operated lubrication system
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Explanation: The force-feed or pressure feed lubrication system uses a pump to increase the pressure to deliver oil to the far parts from the sump. The camshafts, bearings, connecting rods are lubricated. The oil pumped to the main gallery and then delivered to the farthest parts.
4. Verify the block diagram.
a) True
b) False
View Answer
Explanation: Most of the tractor has sump in the crankcase. The oil passes through the strainer to get rid of dirt and then pumped to engine components with pressure through the oil filter.
5. What is a gear pump in the lubrication system?
a) Pumps with gears
b) Pumps without gears
c) Gear shaped pump
d) The pump operated with gear shifts
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Explanation: The gear pump has two spur gears rotating in the opposite direction. The oil gets into the spaces between the gear teeth and delivered to the other/filters side. One of the gears is connected to the camshaft or crankshaft.
6. Which pump uses the rotors for operation?
a) Rotor pump
b) Gear pump
c) Jet pump
d) Lift pump
View Answer
Explanation: The rotor pumps use two rotors for pumping out the oil and deliver it to the gallery. Then the oil is delivered to the engine components. The inner rotor is rotated by a shaft.
7. Why oil is need to be filtered?
a) To trap dirt particles
b) To increase the density of oil
c) To decrease the density of oil
d) To solidify the oil
View Answer
Explanation: The oil is circulated inside the engine for lubrication purposes and so it contains metal tiny pieces, dust, carbon deposits etc. So the oil is filtered every time it is delivered to the engine components.
8. What is the process of full flow filter?
a) To filter full oil
b) To filter oil partially
c) To increase the oil flow
d) To decrease the oil flow
View Answer
Explanation: The oil filter which allows all the oil in operation flows through it before reaching the engine parts. As the filter clogs, the oil blockage may occur and it is not used widely. This filter is the conventional thing and with lower efficiency.
9. What is the process of a bypass filter in the lubrication system?
a) To filter by a partial flow
b) To filter full oil at once
c) To increase the velocity of flow
d) To increase the oil density
View Answer
Explanation: The bypass oil filter has higher efficiency. The filter has a low-velocity flow of oil and filters tiny particles and dust in the oil. The oil partially flows through the filter and simultaneously oil is also delivering to the engine parts.
10. Why a pressure relief valve is needed in bypass filter?
a) To bypass filter
b) To increase flow
c) To increase pressure
d) To decrease oil density
View Answer
Explanation: A pressure relief valve is often incorporated into the oil filter. The oil bypasses the filter when the oil gets clogged. The filter clog increases the pressure and it is relieved. It is also called a bypass valve.
11. What is the purpose of dipstick?
a) To check the oil level
b) To reduce the oil level
c) To increase the oil level
d) To lubricate by dipping
View Answer
Explanation: A dipstick is a metallic stick used to check the oil level in the sump. There are also markings in the dipstick to indicate the level of oil. It is checked before topping up of the new oil and the optimum oil level is always ensured for the proper functioning of the lubrication system.
12. Low viscosity oil is always preferred in the lubrication system.
a) False
b) True
View Answer
Explanation: Low viscous oil has low resistance to flow and it will flow rapidly to the engines. Sometimes, it may have a chance of combustion which causes damage to the engine parts. So low viscous is not used.
13. Why mechanical type oil filters are inefficient?
a) Frequent clogging
b) Absence of clogging
c) A high flow of oil
d) Unfitting of element
View Answer
Explanation: The mechanical oil filters are conventional and they are made up of pleated paper, cotton cloth etc. Thus oil filter clogs when the filter element has more dirt in it. So they are not widely used as it requires frequent changing.
Sanfoundry Global Education & Learning Series – Farm Tractor.
To practice all areas of Farm Tractor, here is complete set of Multiple Choice Questions and Answers.
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