Which of the following is not a classification of fit?
Explanation: Simple classification of fits is down in 3 categories.
Which of the following always provides a positive clearance between the hole and the shaft over the entire range of tolerances?
Explanation: Clearance positive imparts a positive clearance.
In this case, tolerance zone of hole is entirely below that of the shaft.
Explanation: Interference fit provides a positive clearance and hence tolerance zone of hole is below that of shaft.
Which of the following are true for system of tolerances to the shaft and the hole?
Explanation: As per the standards.
The description of tolerances consists of two parts namely?
Explanation: Fundamental deviation and magnitude of tolerance are decrypted in the tolerance.
Which of the following are true for fundamental deviation?
Explanation: Tolerance zone is depicted by deviation while magnitude is depicted by grade.
How many grades of tolerances are there according to BIS system fits and tolerances?
Explanation: As per the standard.
Tolerance for a shaft of 50mm diameter as the basic size, with the fundamental deviation denoted by g and tolerance of grade 7 is represented as?
Explanation: First fundamental deviation is written followed by diameter and grade.
The temperature at which new stress free grains are formed in the metal is called the ______ temperature.
Explanation: Definition of recrystallization temperature.
Hot working or cold working, which reduces strain hardening and residual stresses.
Explanation: In hot working grains are re arranges as per requirement and no residual stresses.