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Define bulk and mean film temperature?
Bulk temperature refers to the average temperature of a fluid within a system, calculated by taking into account the temperature distribution across the system. Mean film temperature, on the other hand, is the average temperature of a fluid film that is in contact with a solid surface, often used in heat transfer calculations. It is calculated by considering the temperatures at the inlet and outlet of the fluid film and accounting for any temperature variations along the surface.
What is Air Wedge?
It is air film which has a wedge shape
How is radiation used to check welds?
A source of gamma radiation is placed on one side of the weld, and a photographic film is placed on the other. Bubbles and weak points will appear on the film.
Why cross-head bearing lubrication most difficult very important?
The force is always down wards, lubrication is a big problem. The relative motion between the x head pin and bearing will never allow to form a thin film lubrication as their relative motion is only for few degree and that too never in one direction
What are the types of boiler tube failure?
due film boiling ,metal temperature riser tubes increase cases for rapture.
What is the difference between silent film and sound film?
The difference between silent film and sound film is because that silent film has no sound whatsoever and a sound film has sounds in it
What is the difference between hydrodynamic lubrication and electrohydrodynamic lubrication?
The difference is that hydrodynamic lubrication requires the motion of the moving parts that are to be lubricated to pump the actual lubricant. Electrohydrodynamic lubrication involves electrically charged lubricants.
What is difference between thick and thin film resistor?
Difference between thick and thin film resistor is not related to thickness but its based on how the film is applied to the surface.
Why does a lubricant reduce friction in bearing?
A lubricant reduces friction in a bearing by forming a protective film between the moving parts. This film effectively separates the surfaces, preventing direct contact and reducing friction and wear. Additionally, the lubricant helps to dissipate heat generated during the operation of the bearing, further reducing friction.
What is the name for liquid that reduce friction?
The liquid that reduces friction is called a lubricant. Lubricants are used to minimize the friction and wear between moving surfaces by forming a film that separates them.
Difference between thick and thin film integrated circuits?
they have differe.nt method of deposition of film of conducting material. Hence, the difference between two is their fabrication process.
What is the difference between a feature film and a supporting feature?
there the same
What is the difference between a digital film and just the regular film?
A digital film is stored and played from a hard drive. Technically its not film at all.
Why lubricant is used when metal parts rub together?
These substances are caused to insinuate themselves between the surfaces, and have the property of so separating them as to prevent serious abrasion. The solid and semi-solid lubricants seem to act as rollers between the surfaces, or form a film between them which itself suffers abrasion or friction. The liquid lubricants, however, maintain themselves as liquid films between the surfaces, upon which the bearing floats
Why is a lubricant used when metals rub against each other?
These substances are caused to insinuate themselves between the surfaces, and have the property of so separating them as to prevent serious abrasion. The solid and semi-solid lubricants seem to act as rollers between the surfaces, or form a film between them which itself suffers abrasion or friction. The liquid lubricants, however, maintain themselves as liquid films between the surfaces, upon which the bearing floats
What is the difference between 600 film and i-Type film?
600 film and i-Type film are both types of instant film used in Polaroid cameras. The main difference between them is that 600 film has a built-in battery to power the camera, while i-Type film does not. This means that i-Type film is slightly cheaper than 600 film, but requires a camera with its own power source.
What's the difference between 600 film and i-Type film?
600 film and i-Type film are both types of instant film used in Polaroid cameras. The main difference between them is that i-Type film does not contain a battery, while 600 film does. This means that i-Type film is typically cheaper than 600 film, but requires a camera with a built-in battery to function properly.
