MANUFACTURING AND PRODUCTION TECHNOLOGY MULTIPLE CHOICE QUESTIONS
Q1. The factor responsible for the formation of discontinuous chips is
(a) low cutting speed and large rake angle
(b) low cutting speed and small rake angle
(c) high cutting speed and large rake angle
(d) high cutting speed and small rake angle
Q2. The addition of lead, sulphur and phosphorus to low carbon steels, help to
(a) reduce built up edge
(b) break up chips
(c) improve machinability
(d) all of these
Q3. In determining the various forces on the chip, Merchant assumed that the
(a) cutting edge of the tool is sharp and it does not make any flank contact with the workpiece
(b) only continuous chip without built-up-edge is produced
(c) cutting velocity remains constant
(d) all of the above
Q4. Cast iron during machining produces
(a). continuous chips
(b) discontinuous chips
(c) continuous chips with built-up-edge
(d) none of these
Q5. Mild steel during machining produces ……….chips.
Q6. A core is used in the mould to
(a) obtain hole or desired cavities
(b) reduce metal erosion in gate and runners
(c) retard foreign matter in the melt
(d) all of the above.
Q7. Which of the following are casting defects?
(c) sand spots
(d) all of the above
Q8. The shrinkage rule for cast iron pattern is
(a) 30 mm per metre longer than the actual object
(b) 10 mm per metre longer than the actual object
(c) 10 mm per metre shorter than the actual object
(d) 30 mm per metre shorter than the actual object.
Q9. Which of the following properties should a good moulding sand have?
(a) A good moulding sand must be porous enough
(b) A good moulding sand must have a good strength
(c) A good moulding sand must have chemical resistivity with molten metal
(d) A good moulding sand must have adhesiveness
Q10. Choose the correct statement
(a) Natural sand maintains moisture content for a long time.
(b) Synthetic sand is an artificial sand.
(c) The two chief constituents of the moulding sand are silica and clay.
(d) All of the above.
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