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151.

In project scheduling, networks have an advantage over Gantt charts since networks
(a) show start and stop of an activity clearly
(b) show activity and activity times clearly
(c) show inter-relationship among activities clearly
(d) are easy to draw

asked in Mechanical Paper-2, 2010

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152.

In CPM, the project duration can be reduced by crashing
(a) one or more non-critical activities
(b) one or more critical activities only
(c) one or more dummy activities only
(d) activities having independent float

asked in Mechanical Paper-2, 2010

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153.

In the inventory control, if the yearly demand for a certain material is fixed. The economic order quantity gives minimum
(a) inventory carrying cost per year
(b) acquisition cost per year
(c) total cost per year
(d) number of orders per year

asked in Mechanical Paper-2, 2010

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154.

If D = annual demand for a material (unit per year)
Q = quantity of material ordered at each order point (unit per order)
C = cost of carrying one unit in inventory for one year (rupees per unit per year)
S = average cost of completing an order for a material (rupees per order)
TSC = total annual stocking costs for a material (rupees per year)
Then, the economic order quantity (EOQ) is
a. √2DS/C
b. 2DC/S
c. √2DC/S
d. 2DS/C

asked in Mechanical Paper-2, 2010

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155.

Assertion (A): Inert gas and base electrode instead of flux coated electrode is used in the case of automatic TIG MIG welding processes.
Reason (R): Better protection is provided by a cloud of inert gas than the cover created by the flux.
(a) Both A and R are individually true and R is correct explanation of A
(b) Both A and R are individually true and R is not correct explanation of A
(c) A is true but R is false
(d) A is false but R is true

asked in Mechanical Paper-2, 2010

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156.

Assertion (A): Longitudinal cutting motion of the tool and cross-wise feed motion of the job generates flat surfaces in planning process.
Reason (R): Jobs used in planning machines are generally long and heavy compared to shaping.
(a) Both A and R are individually true and R is correct explanation of A
(b) Both A and R are individually true and R is not correct explanation of A
(c) A is true but R is false
(d) A is false but R is true

asked in Mechanical Paper-2, 2010

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