1) Which of the following activities or operations is not related to manufacturing?
a. Product design and development
b. Inventory control
c. Quality assurance
d. None of the above
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2) In general, any system that produces useful products or services is called as
a. service system
b. production system
c. both a. and b.
d. none of the above
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3) Which of the following is an example of constant mass manufacturing process?
a. Rolling
b. Turning
c. Broaching
d. Sawing
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4) Gas welding is a type of
a. constant mass process
b. material removal process
c. material addition process
d. none of the above
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5) Why is the selection of right manufacturing process important?
a. to produce the product with least cost
b. to produce the product within reasonable time
c. to produce the product at its best possible quality
d. all of the above
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6) The decision of what parts to be manufactured and what parts to be purchased from market is taken in
a. selection of manufacturing process
b. process planing
c. analysis of manufacturing system
d. none of the above
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7) Which of the following is not a method employed for analysis of manufacturing system?
a. Statistical techniques
b. Probability models
c. Simulation models
d. Waiting line models
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8) Which of the following production processes is least flexible?
a. Job order production
b. Batch or quantity production
c. Mass production
d. none of the above
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9) Match the following elements of control system in Group 1 with their definitions in Group 2.
1. Control variable --------------------------------- A. A standard signal used for comparison in the closed-loop system
2. Command ---------------------------------------- B. The quantity of controlled system which can be directly measured
3. Reference input --------------------------------- C. Any signal other than reference
4. Disturbance -------------------------------------- D. The input which can be independently varied
a. 1-(A), 2-(B), 3-(C), 4-(D)
b. 1-(B), 2-(C), 3-(A), 4-(D)
c. 1-(B), 2-(D), 3-(A), 4-(C)
d. 1-(B), 2-(A), 3-(D), 4-(C)
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10) Open-loop control system is
a. less accurate than closed-loop control system
b. more accurate than closed-loop control system
c. equally accurate to closed-loop control system
d. cannot say
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Answer
Explanation
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ANSWER: less accurate than closed-loop control system
Explanation:
No explanation is available for this question!
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11) What is a disadvantage of automatic control system?
a. It reduces effects of non-linearities
b. It reduces effects of distortions
c. It has a tendency to over-correct errors
d. none of the above
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12) The art of creating industrial relations of any kind, like relation between employers and employees, is called as
a. organization
b. administration
c. management
d. none of the above
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13) Scientific management is a systematic approach to manage the enterprise on the basis of
a. observation
b. experimentation
c. rational decisions
d. all of the above
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14) The objective of utilization of available plant facilities comes under
a. scheduling techniques of production control
b. production planning techniques of production control
c. routing techniques of production control
d. follow-up techniques of production control
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Answer
Explanation
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ANSWER: production planning techniques of production control
Explanation:
No explanation is available for this question!
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15) Mass production means continuous production without loss of time.
a. True
b. False
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16) A model of casting, constructed to use for forming a mould in damp sand, is called as
a. sand construction
b. pattern
c. cover
d. none of the above
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17) Which of the following is not a requirement of a good pattern?
a. It should be light in weight to handle easily
b. It should be smooth to make casting surface smooth
c. It should have low strength to break it and to remove casting easily
d. none of the above
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Answer
Explanation
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ANSWER: It should have low strength to break it and to remove casting easily
Explanation:
No explanation is available for this question!
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18) The patterns which are made in two or more pieces are called as
a. solid patters
b. split patterns
c. loose piece patterns
d. none of the above
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19) Permeability can be defined as the property of moulding sand
a. to hold sand grains together
b. to allow gases to escape easily from the mould
c. to withstand the heat of melt without showing any sign of softening
d. none of the above
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Answer
Explanation
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ANSWER: to allow gases to escape easily from the mould
Explanation:
No explanation is available for this question!
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20) The ability of the moulding sand to withstand the heat of melt without showing any sign of softening is called as
a. strength or cohesiveness
b. refractiveness
c. collapsibility
d. adhesiveness
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21) The sand in its natural or moist state is called as
a. green sand
b. loam sand
c. dry sand
d. none of the above
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22) What is the highest possible percentage of clay contents in loam sand?
a. 10
b. 20
c. 30
d. 50
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23) Match the following contents of green sand in Group 1 with their approximate per cent in Group 2.
1. Silica -------------------------- A. 5 to 10 per cent
2. Clay --------------------------- B. 2 to 5 per cent
3. Bentonite --------------------- C. 8 to 15 per cent
4. Coal dust --------------------- D. 7 to 8 per cent
5. Water -------------------------- E. up to 75 per cent
a. 1-(E), 2-(C), 3-(B), 4-(A), 5-(D)
b. 1-(E), 2-(A), 3-(B), 4-(C), 5-(D)
c. 1-(C), 2-(D), 3-(B), 4-(A), 5-(E)
d. 1-(C), 2-(A), 3-(B), 4-(D), 5-(E)
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24) Which of the following sentences is/are correct for casting process?
a. Casting process is comparatively costly
b. Objects of larges sizes cannot be produced easily by casting process
c. The time required for the process of making casting is quite long
d. All of the above sentences are correct
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Answer
Explanation
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ANSWER: The time required for the process of making casting is quite long
Explanation:
No explanation is available for this question!
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25) The productivity of casting process is comparatively
a. lower than the productivity of other automatic processes like rolling
b. higher than the productivity of other automatic processes like rolling
c. similar to the productivity of other automatic processes like rolling
d. unpredictable
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Answer
Explanation
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ANSWER: lower than the productivity of other automatic processes like rolling
Explanation:
No explanation is available for this question!
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26) Which casting process has no size and shape limits?
a. Sand casting
b. Shell-mould casting
c. Plaster-mould casting
d. none of the above
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27) Blow holes in casting are caused by
a. excessive moisture
b. low permeability
c. excessive fine grains
d. all of the above
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