mechanical engineering MCQs – Page 195

Practise multiple-choice questions from mechanical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

mechanical engineering Mcqs

1. compressors gas turbines and jet engines 2. theory of machines 3. nuclear power plants 4. engineering materials 5. strength of materials mechanical engineering 6. thermodynamics 7. heat transfer 8. i c engines 9. steam boilers engines nozzles and turbines 10. engineering mechanics 11. fluid mechanics mechanical engineering 12. production technology 13. machine design 14. hydraulic machines 15. workshop technology 16. refrigeration and air conditioning

3881. In the Emerson efficiency plan, a worker receives only his daily wage and no bonus is paid till his efficiency reaches__________________?
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A. 75%

B. 80%

C. 50%

D. 90%

E. 661%

3882. The time by which the activity completion time can be delayed without affecting the start of succeeding activities, is Known as_________________?
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A. free float

B. duration

C. none of the above

D. interfering float

E. total float

3883. CPM is the___________________?
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A. time oriented technique

B. activity oriented technique

C. work oriented technique

D. event oriented technique

E. target oriented technique

3884. Positive slack on a PERT indicates that project is________________?
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A. as per schedule

B. none of the above

C. beyond schedule

D. on critical path

E. ahead of schedule

3885. CPMis___________________?
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A. is built of activities oriented program-mes

B. synthesising in concepts

C. all of the above

D. is, based on one time eytimate

E. is used for repetitive works

3886. Critical path moves along the activities having total float of_____________________?
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A. same value

B. none of the above

C. negative value

D. positive value

E. zero value

3887. The probability distribution of project completion in PERT follows following distribution_________________?
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A. normal

B. exponential

C. beta

D. Gaussian

E. binomial

3888. Criticalpath on PERT/CPM chart is obtained by joining the events having____________________?
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A. minimum slack

B. maximum slack

C. average slack

D. judgement and experience

E. no slack

3889. PERT and CPM are__________________?
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A. charts which increase aesthetic appearance of rooms

B. aids to the decision maker

C. aids to determine cost implications of project

D. techniques to determine project status

E. decision making techniques

3890. Pick up the correct statement from the following?
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A. critical path method was invented by Morgan R. Walker of Dupot and James E. Kelley of Remington U.S.A in 1957

B. all of the above

C. critical path method avoids delays which are very common in bar chart

D. critical path method provides a realistic approach to the daily problems

E. critical path method is an improvement upon bar chart method

3891. The reasons which are basically responsible for the formation of a queue should be that ___________________?
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A. output rate is constant and the input varies in a random manner

B. all of the above

C. the average service rate Hess than the average arrival rate

D. output rate is linearly proportional to input

E. none of the above

3892. Descripancies of bar chart techniques are________________?
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A. consequential effects of lack in one activity on omer

B. all of the above

C. consequential effects of lack in one activity on the finish date

D. free time available for an activity cant be predicted

E. effective monitoring/controlling cant be done

3893. The first method invented for planning projects was________________?
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A. milestone chart

B. none of the above

C. critical path method (CPM)

D. bar chart method

E. programme evaluation and review technique (PERT)

3894. The basic difference between PERT and CPM is that_____________?
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A. critical path is determined in PERT only

B. costs are considered on CPM only and not in PERT

C. guessed times are used in PERT and evaluated times in CPM

D. PERT deals with events and CPM with activities

E. PERT is used in workshops and CPM in plants

3895. The probability distribution of activity times in PERT follows following distribution__________________?
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A. exponential

B. beta

C. normal

D. binomial

E. Gaussian

3896. The performance of a specific task in CPM is known as ______________________?
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A. activity

B. event

C. contract

D. none of the above

E. dummy

3897. In order that linear programming techniques provide valid results________________?
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A. relations between factors must be linear (positive)

B. relations between factors must be linear (negative)

C. only one factor should change at a time, others remaining constant

D. A. or B.

E. none of the above

3898. Choose the wrong statement Time study is used to_________________?
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A. determine the capability of an operator to handle the number of machines

B. determine standard costs

C. provide a basis for setting piece prices or incentive wages

D. determine overhead expenses

E. compare alternative methods

3899. In A-B-C control policy, maximum attention is given to__________________?
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A. proper quality assurance program-mes

B. those items which consume more money

C. those items which consume money

D. those x items which are in more demand

E. those items which are not readily available

3900. If E is the duration, ES and EF are die earliest start and finish times, LS and LF are latest start and finish times, then the following relation holds good______________________?
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A. LS=LF-D

B. all of the above

C. LF = LS + D

D. D = EF-ES

E. EF=ES+D

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