Limits and Fits Objective Questions with Answers - Set 02 - ObjectiveBooks

Limits and Fits Objective Questions with Answers - Set 02

Practice Test: Question Set - 02

1. Interchangeability is normally applied for
    (A) Repairing of parts
    (B) Mass production
    (C) Single piece production
    (D) All the above

2. The difference between the maximum and minimum sizes allowed in manufactured components is called:
    (A) Clearance
    (B) Allowance
    (C) Tolerance
    (D) Limit

3. The measured size of the dimension of a component is called
    (A) Basic size
    (B) Normal size
    (C) Allowed size
    (D) Actual size

4. Best example for shrinkage fit is
    (A) Cart rim on the wooden wheel
    (B) Tyre on the rail wheel
    (C) Tyre on the bicycle rim
    (D) Flywheel on the shaft

5. Threaded components both external and internal are manufactured with thread tolerance. One of the reasons for having thread tolerances is to
    (A) Ensue interchangeability of threaded parts
    (B) Identify and group up threaded assemblies by labeling
    (C) Determine the percentage of thread of both bolt and nut
    (D) Obtain qualitative surface finish

6. British standard limit system consists of
    (A) 21 classes of fits and 16 grades of tolerances
    (B) 12 classes of fits and 61 grades of tolerances
    (C) 16 classes of fits and 21 grades of tolerances
    (D) 61 classes of fits and 12 grades of tolerances

7. Tolerance is given to the part size to
    (A) Increase the production
    (B) Decrease the production
    (C) Finish the components approximately
    (D) Produce the parts within the required permissible size error

8. As per BIS system of Limits and fits, there are 18 grades of tolerances represented by number symbols, from
    (A) IT01, IT1 ... to IT16
    (B) IT1 ... to IT18
    (C) IT01... to IT17
    (D) IT01, IT0, IT1 to 16

9. Best example for driving fit is
    (A) Ball Bearing on the shaft
    (B) Tyre on the rail wheel
    (C) Pulley with key on the shaft
    (D) Cart rim on the wooden wheel

10. In the BIS system of limits and fits the standard range of sizes ‘covered’ is
    (A) 0 to 500 mm
    (B) 25 to 400 mm
    (C) 0 to 100 mm
    (D) 0 to 10 mm

11. A hole whose lower deviation is zero is called basic hole. Which one of the following letters indicates basic hole?
    (A) E
    (B) F
    (C) G
    (D) H

12. In the BIS system of limits and fits, 25 hole deviations are specified by using
    (A) Small letters
    (B) Capital letters
    (C) Small letters with tolerance
    (D) Small letters with numbers

13. Mass-produced components should be interchangeable. Which one of the following is the most important factor required to achieve the interchangeability in mass production?
    (A) Dimensional accuracy
    (B) Standardization
    (C) Geometrical accuracy
    (D) Surface finish

14. The three classes of fits as per BIS system are
    (A) Clearance fit, transition fit and Interference fit
    (B) Medium fit, push fit and tight fit
    (C) Flat fit, round fit and square fit
    (D) Sliding fit, loose fit and shrinkage fit

15. Under the terminology of the IS system of limits the term 'tolerance' is defined as the difference between the
    (A) Maximum limit and the basic size
    (B) Minimum limit and the basic size
    (C) Maximum limit and minimum limit
    (D) Actual size and basic size

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