2nd Semester NSQF - Module 4 - Fits and Limits

What is marked as ‘X’ in limits and fits

terminology?

• Shaft

• Hole

• Basic size

• Zero line

What is the term indicate the difference between

maximum limit of size and minimum limit of size?

• Limit of size

• Tolerance

• Basic size

• Actual deviation

How many fundamental deviations are in BIS

system?

• 24

• 25

• 26

• 27

How many fundamental tolerances in BIS system?

• 16

• 17

• 18

• 20

What is the range of letter symbols used for

clearance fit in fundamental deviation?

• JS to N

• A to H

• P to ZC

• A to ZC

What is the range in grade of tolerance used for fits?

• IT01 to 5

• 12 to 16

• IT01 to 16

• IT06 to IT11

What indicates 25H7in limits and fits as per BIS?

• Basic size

• Tolerance size of

  hole

• Fundamental

  deviation

• Grade of tolerance

• 0.2 mm

• 0.4 mm

• 25.2 mm

• 24.8 mm

What is the size if dimensions are within the

tolerance zone?

• Actual size

• Basic size

• Acceptable size

• Limits of size

What is termed as relationship between two

mating parts of an hole and a shaft in an assembly?

• Clearance fit

• Interference fit

• Fit

• Transition fit