A high temperature lubricants used may undergo ________
The reduction in friction is only when _____ of the oil film is ______ than that of the metal.
Answer: shear strength, less
The lubricant in internal combustion is exposed to _________
In gears, the lubricants are exposed to _______
For, delicate instruments the suitable lubricants are _____
Answer: thin vegetable oil
The various grads of oils/referred to
Answer: American Society of Automotive Engines.
Pressure fed oiling is not used with
Flickering oil pressure warning light and off at stop lights is an indication of
Answer: Low pressure problems
High oil consumption is indicated by
Answer: Oil added to engine frequently
Which one of the following is the best way for preparing an emulsion ?
Answer: Add soluble oil to the water
Which one of the following is NOT the property of a good lubricant ?
Answer: Becomes thicker after prolonged use
Lubricant is necessary to
Answer: Run the machine smoothly taking least load
The lubricants for transformers must have quality of good ________
Answer: dielectric strength
In textile industries ____ are added to the lubricants.
The lubricants used in refrigerators will have ________
What is the best lubricant for tractor roller?
What are the lubricants used for railway tracks?
The lubricants for gears must possess ______
Answer: resistance to oxygen
The friction is needed to be reduced because _____
Answer: it will be reducing the excess heat generation
Oil emulsions are the most effective lubricants in _________