Basic Fitting Drilling and Taper MCQ Questions - Set 01 - ObjectiveBooks

# Practice Test: Question Set - 01

1. What is the definition of ‘tolerance’ in BIS system?
(A) Difference between basic size & actual size
(B) Algebraic difference between maximum limit & basic size
(C) Difference between maximum limit & minimum limit
(D) Algebraic difference between minimum limit & basic size

2. Which type of fit is obtained if the hole is bigger than the shaft?
(A) Tight fit
(B) Transition fit
(C) Clearance fit
(D) Interference fit

3. Which part of drill forms the cutting edge?
(A) Body
(B) Land
(C) Point
(D) Flutes

4. How many fundamental deviations are in BIS system?
(A) 12
(B) 18
(C) 20
(D) 25

5. What is the maximum limit size of dimension Dia. 25 (+0.003, -0.001)?
(A) 25.003 mm
(B) 25.001 mm
(C) 24.997 mm
(D) 24.999 mm

6. What is an advantage of mass production?
(A) Production rate is increased
(B) Measuring time is increased
(C) Jigs and fixtures are needed
(D) Special purpose machines are needed

7. What is the least count of Vernier height gauge?
(A) 0.001 mm
(B) 0.002 mm
(C) 0.005 mm
(D) 0.02 mm

8. What is the disadvantage of mass production?
(A) Production rate is low
(B) Cost of piece is reduced
(C) Jigs and fixtures are needed
(D) Gauges are used to check the component

9. What is the formula for finding maximum limit size in BIS system?
(A) Maximum limit = Basic size + Upper deviation
(B) Maximum limit = Basic size + Lower deviation
(C) Maximum limit = Upper deviation ÷ Basic size
(D) Maximum limit = Lower deviation ÷ Basic size

10. What is the point angle of drill for drilling mild steel?
(A) 80°
(B) 90°
(C) 118°
(D) 120°

11. Which system of limits and fits are followed in our country?
(A) BIS system
(B) DIN system
(C) BSS system
(D) FPS system

12. How to indicate fundamental deviation of hole in BIS system?
(A) Small letter
(B) Capital letter
(C) Numbers only
(D) Either capital or small letters

13. Why the tap drill size to be calculated?
(A) To avoid drill breaking
(B) To avoid material wastage
(C) To calculate sufficient cutting speed
(D) To maintain sufficient material to tap

14. How we specify a Vernier height gauge?
(A) Width of beam
(B) Height of beam
(C) Thickness of beam
(D) Size of base

15. What is the definition of fits?
(A) Maximum size of a dimension
(B) Minimum size of a dimension
(C) Permissible deviation of a dimension
(D) Relationship that exist between two mating parts

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