Lubricants Quiz | Lubricants Multiple Choice Questions and Answers

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Questions
1 A high temperature lubricants used may undergo ________
A volatilization
B combustion
C vulcanization
D lubrication

Answer: volatilization
2 The reduction in friction is only when _____ of the oil film is ______ than that of the metal.
A shear strain, more
B shear strength, less
C shear strength, more
D shear strain, less

Answer: shear strength, less
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3 The lubricant in internal combustion is exposed to _________
A high temperature
B high pressure
C low temperature
D low pressure

Answer: high temperature
4 In gears, the lubricants are exposed to _______
A low pressure
B high temperature
C low temperature
D high pressure

Answer: high pressure
5 For, delicate instruments the suitable lubricants are _____
A heavy cutting oil
B thin vegetable oil
C light cutting oil
D sunflower oil

Answer: thin vegetable oil
6 The various grads of oils/referred to
A Japan Society of Automotive Engines.
B British Society of Automotive Engines.
C American Society of Automotive Engines.
D None of the above

Answer: American Society of Automotive Engines.
7 Pressure fed oiling is not used with
A Cylinder walls
B Hydraulic lifters
C Crankshaft hearings
D Camshaft bearings

Answer: Cylinder walls
8 Flickering oil pressure warning light and off at stop lights is an indication of
A Low pressure problems
B Oil level in the engine low
C Light Circuit at fault
D Oil contaminated

Answer: Low pressure problems
9 High oil consumption is indicated by
A Oil indicator light glows
B Oil-wet areas on a or around the engine
C Oil added to engine frequently
D None of the above

Answer: Oil added to engine frequently
10 Which one of the following is the best way for preparing an emulsion ?
A Add soluble oil to the water
B Add water to the soluble oil
C Mix soluble oil and water by pouring both simultaneously
D None of the above

Answer: Add soluble oil to the water
11 Which one of the following is NOT the property of a good lubricant ?
A Takes up the surface pressure between sliding parts
B Becomes thicker after prolonged use
C No change in viscosity due to variation in temperature
D Reduces friction between machine parts

Answer: Becomes thicker after prolonged use
12 Lubricant is necessary to
A Produce workpiece of greater accuracy
B Run the machine smoothly taking least load
C Run the machine quickly
D Stop the machine immediately

Answer: Run the machine smoothly taking least load
13 The lubricants for transformers must have quality of good ________
A no resistance to oxygen
B less oiliness
C dielectric strength
D low load capacity

Answer: dielectric strength
14 In textile industries ____ are added to the lubricants.
A inhibitors
B carbon
C catalyst
D oxygene

Answer: inhibitors
15 The lubricants used in refrigerators will have ________
A no pour point
B low cloud point
C high pour point
D high viscosity

Answer: low cloud point
16 What is the best lubricant for tractor roller?
A grease
B vegetable oil
C graphite
D heavy oil

Answer: grease
17 What are the lubricants used for railway tracks?
A vegetable oil
B coconut oil
C graphite
D None of the above

Answer: graphite
18 The lubricants for gears must possess ______
A resistance to oxygen
B effected by centrifugal force
C less oiliness
D low load carrying capacity

Answer: resistance to oxygen
19 The friction is needed to be reduced because _____
A will increase the consumption electricity
B it will be reducing the excess heat generation
C will increase the load
D will increase the excess the heat generation

Answer: it will be reducing the excess heat generation
20 Oil emulsions are the most effective lubricants in _________
A gears
B light cutting
C heavy cuttings
D engines

Answer: light cutting

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