Operations Research - Study Mode

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[#236] The latest time that the event can be delayed without delaying the completion of the entire project in PERT chart is

(A) earliest allowable time

(B) latest allowable time

(C) earliest pass

(D) latest pass

Correct Answer

(B) latest allowable time

[#237] Which statement is true?

(A) Unit scheduling system is used, for scheduling when jobs are produced one by one and are different types i.e. for job production

(B) When jobs are produced in batches, batch scheduling system is used

(C) When large number of similar items are produced, mass scheduling system is used

(D) None of the above

(E) Scheduling system is used for scheduling when jobs are produced one by one and are different in nature, i.e. for job shop

(F) When jobs are produced to order in batches, batch scheduling system is used

(G) When large number of items of similar type are produced, i.e. in mass production, mass scheduling is used

(H) None of the above

Correct Answer

(D) None of the above
(H) None of the above

[#238] Types of follow-up includes

(A) programme control

(B) order processing

(C) shortage chasing

(D) all of the above

Correct Answer

(D) all of the above

[#239] Which of the following is not a characteristic of the LP?

(A) Resources must be limited

(B) Only one objective function

(C) Parameters value remains constant during the planning period

(D) The problem must be of minimization type

Correct Answer

(D) The problem must be of minimization type

Explanation

Solution: The problem must be of minimization type is not a characteristic of the LP. The objective of linear programming is to: “maximize or to minimize some numerical value.

[#240] Non-negativity condition in an LP model implies.

(A) A positive coefficient of variables in objective function

(B) A positive coefficient of variables in any constraint

(C) Non-negative value of resources

(D) None of the above

Correct Answer

(D) None of the above

Explanation

Solution: Non-negativity restriction indicates that all decision variables must take on values equal to or greater than zero.