The ratio of the ultimate stress to the design stress is known as factor of safety. Its value is more than one.
167) The ratio of the ultimate stress to the design stress is known as
Answer is:
factor of safety
Explanation:
Related Machine Design MCQ with Answers
Answer is:
2 mm for rivet diameter from 39 mm to 48 mm
Answer is:
Incorrect
Answer is:
greater than 1/10
Explanation:
If the thickness of the wall of a shell is less than 1/10 of its diameter, it is known as thin shell.
If the thickness of the wall of a shell is greater than 1/10 of its diameter, it is known as thick shell.
The thick shells are, generally, used to withstand high pressures. Sometimes, even, compound thick shells are used to withstand very high pressures or to contain chemicals under high pressure.
The problem of thick cylinders is, somewhat, complex and is solved by Lame's theory.