1
GATE ME 1990
MCQ (Single Correct Answer)
+1
-0.3
In pool boiling the highest $$HTC$$ occurs in
A
Sub-cooled boiling zone
B
Nucleate boiling zone
C
Partial film boiling zone
D
Film boiling zone
2
GATE ME 1990
Subjective
+5
-0
A double pipe counter flow heat exchanger is to be designed to cool $$12000$$ $$kg/hr$$ of an oil of specific heat $$1.95$$ $$kJ/kgK$$ from $$\,85{}^ \circ C$$ to $$\,55{}^ \circ C$$ by water entering the heat exchanger at $$\,30{}^ \circ C$$ and leaving at $$\,45{}^ \circ C$$. If the $$OHTC$$ of heat exchanger is $$400$$ $$\,W/{m^2}K.\,$$ Calculate the $$LMTD$$ and the surface area of the heat exchanger
3
GATE ME 1990
MCQ (Single Correct Answer)
+2
-0.6
In the construction of networks, dummy activities are introduced in order to :
A
Compute the slack on all events
B
Transfer resources, if necessary, during monitoring
C
Clearly designate a precedence relationship
D
Simplify the crashing plan
4
GATE ME 1990
Subjective
+5
-0
Service workshop has four jobs on hand to be processed. The date and processing time for each of the jobs are given below GATE ME 1990 Industrial Engineering - Scheduling Question 3 English

Considering mean lateness and mean flow time, evaluate the shortest-time rule and least-slack rule and recommend the desirable rule.

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