mechanical engineering MCQs – Page 69

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 Review each marked answer and report any item that may be outdated or unclear.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

1361. PERT analysis is based on____________________?
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A. optimistic time

B. most likely time

C. all of the above

D. pessimistic time

E. none of the above

1362. The standard time for a job is_________________?
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A. total work content + delay contingency allowance

B. base time + relaxation time

C. total work content + relaxation time

D. total work content

E. total work content + basic time

1363. The performance of a specific task in CPM is known as ______________________?
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A. activity

B. dummy

C. event

D. contract

E. none of the above

1364. The most popular firing order in case of four cylinder in-line I.C. engine is__________________?
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A. 1-4-2-3

B. 1-3-4-

C. 1-2-3-4

D. 1-3-2-4

E. 1-2-4-3

1365. Sulphur content in diesel oil should not be more than_________________?
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A. 0.10%

B. 10%

C. 1%

D. 5%

E. 0.01%

1366. An engine has a normal speed of 960 r.p.m. and no load speed of 1000 r.p.m. The speed droop of governor will be about___________________?
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A. 8%

B. 1%.

C. 4%

D. 2%

E. 4%

1367. Pick up the wrong statement about supercharging __________________?
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A. supercharging is essential in aircraft engines

B. supercharging reduces knocking in diesel engines

C. there can be limited supercharging in petrol engines because of detonation

D. supercharging at high altitudes is essential

E. supercharging results in fuel economy

1368. Micro motion study is__________________?
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A. study of man and machine conducted simultaneously

B. motion study* observed on enhanced time intervals

C. scientific, analytically procedure for determining optimum work method

D. analysis of a man-work method by using a motion picture camera with a timing device in the field of view

E. motion study of a sequence of operations conducted systematically

1369. The disadvantage of product layout is_________________?
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A. high cost of inspection

B. production time is longer, requiring more goods in inventory

C. high initial investment for the specialized facilities

D. skilled labour to operate machines

E. costly and complex production control

1370. In the Halsey 50-50 plan, the following are rewarded more___________________?
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A. past good workers

B. none of the above

C. past poor workers

D. all of the above

E. past average workers

1371. A milestone chart_______________________?
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A. all of the above

B. points outgoing ahead of schedule of jobs, if any

C. shows the inter dependences of various jobs

D. depicts the delay of jobs, if any

E. none of the above

1372. The top piston ring nearer to the piston crown is known as_____________________?
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A. leading ring

B. scrapper ring

C. groove ring

D. oil ring

E. compression ring

1373. Value engineering aims at finding out the________________?
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A. selling price of an item

B. break even point when machine re-quires change

C. resale value of a product

D. major function of the item and accomplishing the same at least cost without change in quality

E. depreciation value of a product

1374. The employees provident fund act is applicable to________________?
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A. all major industries

B. volunteers

C. all industries

D. all industries other than small and medium industries

E. the industries notified by Government

1375. Which one of the following represents a group incentive plan ?
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A. Taylor Plan

B. Bedaux Plan

C. Rowan Plan

D. Lincoln Plan

E. Halsey Premium Plan

1376. The simplex method is the basic method for__________________?
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A. value analysis

B. operation research

C. model analysis

D. none of the above

E. linear programming

1377. Which is correct statement about reaction time for autoignition of fuel and the fuel air ratio__________________?
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A. all of the above

B. chemically correct mixture has mini-mum reaction time

C. non of the above

D. lean mixture has high reaction time

E. rich mixture has high reaction time

1378. Gnatt charts are used for_________________?
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A. none of the above

B. linear programming

C. scheduling and routing

D. forecasting sales

E. production schedule

1379. Basic motion time study gives times for basic motions in ten thousandths of_______________?
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A. none of the above

B. second

C. minute

D. hour

E. day

1380. The m.e.p. of a petrol engine first increases as the fuel air ratio is increased and then decreases on further increase in fuel air ratio. The M.E.P is maximum in the zone of________________?
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A. chemically correct mixture

B. unpredictable

C. lean mixture

D. none of the above

E. rich mixture

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