Explain how lubricants help in reducing friction?

Explain how lubricants help in reducing friction?
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Explain how lubricants help in reducing friction?
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What are the types of lubricants ?

Description : What are the types of lubricants ?

Last Answer : Lubricants can be classified as follows. Namely- (a) Mineral oil. (B) Animal and plant oils (c) Synthetic oils (d) Other liquids (e) Grease (f) Solid lubricants.

How many types of lubricants according to the source ?

Description : How many types of lubricants according to the source ?

Last Answer : : According to the source, there are 2 types of lubricants. For example: animals and plants.

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Description : What Designed to regulate temperature secrete lubricants and protect the body from harmful substances?

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Volatile hydrocarbons are not used in the brakes of automobile as lubricants, but non-volatile hydrocarbons are used as lubricants.

Description : Volatile hydrocarbons are not used in the brakes of automobile as lubricants, but non-volatile hydrocarbons are used as lubricants.

Last Answer : Ans.: The vapour pressure of volatile hydrocarbons is very high and they get evaporated leaving behind the system. Due to this they are not used as lubricants in automobiles. Nonvolatile hydrocarbons having low vapour pressure are used as lubricants.

The best lubricants for a machine working at high temperature & load is (A) Grease (B) Solid lubricant (C) Animal oils (D) Mineral oils

Description : The best lubricants for a machine working at high temperature & load is (A) Grease (B) Solid lubricant (C) Animal oils (D) Mineral oils

Last Answer : Option B

Pick out the correct combination about the role of various additives used in polymers. (A) Plasticiser: increases the polymer strength (B) Heat stabiliser: increases the maximum service temperature (C) Fillers: Does not affect the property of polymer but increases its weight (D) Lubricants: increases the flexibility of polymers

Description : Pick out the correct combination about the role of various additives used in polymers. (A) Plasticiser: increases the polymer strength (B) Heat stabiliser: increases the maximum service ... property of polymer but increases its weight (D) Lubricants: increases the flexibility of polymers

Last Answer : Option C

Sun Petroleum Products departmentalizes by fuels, lubricants, and waxes and chemicals. This is an example of departmentalization by……….. (a) Product ; (b) Functions ; (c) Job design ; (d) Customer

Description : Sun Petroleum Products departmentalizes by fuels, lubricants, and waxes and chemicals. This is an example of departmentalization by……….. (a) Product ; (b) Functions ; (c) Job design ; (d) Customer

Last Answer : (a) Product ;

Define lubricant. Give the classification of lubricants with at least one example of each type.

Description : Define lubricant. Give the classification of lubricants with at least one example of each type.

Last Answer : Lubricant: Any substance introduced between two moving or sliding surface to reduce the frictional resistance between them is known as lubricant. Classification: i) Solid lubricants: Examples: graphite, ... acids like oleic acid, Stearic acid etc., silicones, blended oils, and mineral oils.

Define lubricants. Gives its types.

Description : Define lubricants. Gives its types.

Last Answer : Lubricant:- Any substance introduced between two moving or sliding surfaces to reduce the frictional resistance between them is known as a lubricant. Types of Lubricant:- i) Solid lubricant ii) Semi-solid lubricant iii) Liquid lubricant.

Regenerative braking involves : a) Nano fibers that repair the surface of brake pads b) Reducing the amount of friction c) Reclaiming heat from the brake and using it for power d) All of the above

Description : Regenerative braking involves : a) Nano fibers that repair the surface of brake pads b) Reducing the amount of friction c) Reclaiming heat from the brake and using it for power d) All of the above

Last Answer : c) Reclaiming heat from the brake and using it for power

The internal friction between the ingredients to concrete is minimized by (a) Adopting coarse aggregates (b) Using more water (c) Reducing the surface area (d) All of these

Description : The internal friction between the ingredients to concrete is minimized by (a) Adopting coarse aggregates (b) Using more water (c) Reducing the surface area (d) All of these

Last Answer : (d) All of these

knives of the cutter bar are scrratedin order to a)Increase the co-efficient of friction between crop stalk machine b)Reducing the deflection of stalk side ways c)To increase the cutting speed d)To improve cutting height

Description : knives of the cutter bar are scrratedin order to a)Increase the co-efficient of friction between crop stalk machine b)Reducing the deflection of stalk side ways c)To increase the cutting speed d)To improve cutting height

Last Answer : a)Increase the co-efficient of friction between crop stalk machine