Mechanical Engineering - Machine Design - Discussion

Discussion Forum : Machine Design - Section 1 (Q.No. 41)
41.
In a hydrodynamic lubricated bearing
there is a thick film of lubricant between the journal and the bearing
there is a thin film of lubricant between the journal and the bearing
there is no lubricant between the journal and the bearing
the lubricant is forced between the journal and the bearing, by external pressure
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
14 comments Page 1 of 2.

Ramana Surada said:   6 years ago
Hydrodynamic and hydrostatic both are come under thick film lubricant but hydrodynamic film is duo to relative motion and hydrostatic films is due external pressurized pump.

Dhaval Chaudhary said:   7 years ago
A is the correct Answer. I agree.

Vinit said:   7 years ago
The Correct answer is A.

It's a thick film because metal to metal contact is avoided at high speed.

The condition for thin film is that metal to metal contact is not avoided even at high speed.

Mahmoud said:   7 years ago
It is a thin film.

Paul said:   7 years ago
The lubricant is forced between the journal and the bearing, by external pressure.

This is also true.

But prominent is a thin film, Not thick one.

Abhishek said:   8 years ago
It is Thick film.

Habtamu said:   8 years ago
Thick film will be hydrostatics & in the thin film, it will be hydrodynamics. So answer is B.

Rbnbishnoi said:   9 years ago
In the thick film it will be hydrostatics & in the thin film, it will be hydrodynamics. Search in the book. So answer is B.

Vinod said:   9 years ago
It is thick film, so answer is A, In thin film bearing lubricant, is present between working surfaces and are partially contact each other at least part of time.

Ashok said:   9 years ago
It is a thick only, google it.


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