Limits and Fits

The exact functional size from which the limits of variation are derived is known as the

• Basic size.

• Nominal Size.

• Tolerance size.

• Allowance size.

Interchangeability becomes most difficult for the size of option

• Ø25 ± 0.5mm

• Ø25 ± 0.05mm

• Ø25 ± 0.01mm

• Ø25 ± 0.001mm

The two extreme dimensions of a component is known as

• 'fit'

• 'limits'

• 'basic size'

• 'nominal size'

The limits of sizes applied to the hole and shaft is an example of

• bilateral tolerance.

• unilateral tolerance.

• compound tolerance.

• equal lateral tolerance.

What is the basic size of the hole and shaft?

• 27.95mm

• 28mm

• 28.05mm

• 28.15mm

The difference between the upper limit and lower limit of a dimension is known as

• allowance.

• clearance.

• fit.

• tolerance.

Identify the 'fit' this assembly.

• Loose fit.

• Clearance Fit.

• Transition Fit.

• Interference Fit.

Which one of the following types of fit will have ALL negative allowance between two mating parts?

• Loose Fit.

• Clearance Fit.

• Transition Fit.

• Interference.

What is the total tolerance of 40mm+0.05/-0.03 ?

• 0.02mm.

• 0.03mm.

• 0.05mm.

• 0.08mm.

What is the tolerance of 35mm+0.05/+0.03 ?

• 0.02mm.

• 0.03mm.

• 0.05mm.

• 0.08mm.