Driving Fit - When a plug or a shaft is made slightly larger than the hole into which it is to be inserted and the allowance is such that the parts can be assembled by driving, this is known as driving fit.
Ball bearing on the shaft is the best example for driving fit.
11) Best example for driving fit is
Answer is:
Ball Bearing on the shaft
Explanation:
Related Limits and Fits MCQ - Machinist(Set-1) with Answers
Answer is:
Cart rim on the wooden wheel
Explanation:
Best example for shrinkage fit is Cart rim on the wooden wheel.
Shrinkage fit A shrinkage fit is obtained by making the shaft (internal member) slightly larger than the hole (external member). In shrinkage fit, pressure is not required for assembling but instead the hole (external member) is heated and expanded sufficiently to permit the shaft (internal member) to be inserted easily. Then the hole (external member) is cooled to shrink tightly around the shaft (internal member).
Answer is:
The size of the hole is made constant
Explanation:
In Hole basic system the size of the hole is made constant, different fits is obtained by varying shaft size.
Answer is:
Produce the parts within the required permissible size error
Explanation:
It is impossible to make anything to an exact size, therefore, it is essential to allow a definite tolerance or permissible variation on every specified dimension. Hence Tolerance is given to the part size to produce the parts, within the required permissible size error.
Answer is:
IT01, IT0, IT1 to 16
Explanation:
As per BIS system of Limits and fits, there are 18 grades of tolerances represented by number symbols from IT01, IT0, IT1 to 16.