Production Technologies - Set 15 - ObjectiveBooks

Production Technologies - Set 15

Practice Test: Question Set - 15

1. The depth of cut in drilling is __________ the drill diameter.
    (A) Equal to
    (B) One-fourth
    (C) One-half
    (D) Double

2. Carbide tipped tools usually have
    (A) Negative rake angle
    (B) Positive rake angle
    (C) Any rake angle
    (D) No rake angle

3. The stroke of a shaping machine is 250 mm. It makes 30 double strokes per minute. The overall average speed of operation is
    (A) 3.75 m/min
    (B) 5 m/min
    (C) 7.5 m/min
    (D) 15 m/min

4. In a planer
    (A) Tool is stationary and work reciprocates
    (B) Work is stationary and tool reciprocates
    (C) Tool moves over stationary work
    (D) Tool moves over reciprocating work

5. The operation of machining several surfaces of a workpiece simultaneously is called
    (A) Profile milling
    (B) Gang milling
    (C) Saw milling
    (D) Helical milling

6. In _________ operation, the cutting force is maximum when the tooth begins its cut and reduces it to minimum when the tooth leaves the work.
    (A) Up milling
    (B) Down milling
    (C) Face milling
    (D) End milling

7. The cutting speed for counter-boring should be _________ that of drilling operation.
    (A) Equal to
    (B) Less than
    (C) Greater than
    (D) None of these

8. In gear hobbing
    (A) Only hob rotates
    (B) Only gear blank rotates
    (C) Both hob and gear blank rotates
    (D) Neither hob nor gear blank rotates

9. The carbide tools operating at very low cutting speeds (below 30 m/min)
    (A) Reduces tool life
    (B) Increases tool life
    (C) Have no effect on tool life
    (D) Spoils the work piece

10. The cutting fluid mostly used for machining steel is
    (A) Water
    (B) Soluble oil
    (C) Dry
    (D) Heavy oils

11. In a plain milling cutter, the chip space between the back of one tooth and the face of the next tooth is called
    (A) Face
    (B) Fillet
    (C) Gash
    (D) Land

12. Gears can be best produced on mass production by
    (A) Shaping
    (B) Casting
    (C) Forming
    (D) Hobbing

13. In a single point turning operation with a cemented carbide and steel combination having a Taylor exponent of 0.25, if the cutting speed is halved, then tool life will become
    (A) Half
    (B) Two times
    (C) Eight times
    (D) Sixteen times

14. The material which on machining produces chips with built up edge is
    (A) Brittle material
    (B) Tough material
    (C) Hard material
    (D) Ductile material

15. The swing diameter over the bed is ________ the height of the centre measured from the bed of the lathe.
    (A) Equal to
    (B) Twice
    (C) Thrice
    (D) One-half

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