mechanical engineering MCQs – Page 72

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 Review each marked answer and report any item that may be outdated or unclear.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

1421. In petrol engines, the maximum power is developed corresponding to relative fuel air ratio of________________?
0

A. 0.85

B. 1.1 to 1.3

C. 1.2 to 1.5

D. 1

1422. Which of the following engines can work on very lean mixture__________________?
0

A. two stroke engine

B. C.I. engine

C. S.I. engine

D. four stroke engine

E. all of the above

1423. As the number of cylinders in multi-cylinder engine increases, the power to weight ratio_______________?
0

A. Remains same

B. Decreases

C. Decreases upto a limit and then increases

D. Increases

1424. Critical path moves along the activities having total float of_____________________?
0

A. zero value

B. positive value

C. none of the above

D. negative value

E. same value

1425. Diesel engines as compared to petrol engines require ______________________?
0

A. bigger flywheel

B. no flywheel

C. smaller flywheel

D. same size flywheel

E. flywheel whose size may be less or more depending on several other fac-tors

1426. A dummy activity________________?
0

A. all of the above

B. is represented by a dotted line

C. none of the above

D. does not require any time

E. is artificially introduced

1427. The spark plug gap is normally maintained at________________?
0

A. 0.1 to 0.2 mm

B. 0.2 to 0.4 mm

C. 0.45 to 0.6 mm

D. 0.8 to 1 mm

E. 0.6 to 0.8 mm

1428. In a PERT chart___________________?
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A. only selected activities are numbered

B. only important activities should be numbered

C. only critical activities are numbered

D. all activities should be numbered

E. no activity is numbered

1429. Diesel engines have low specific fuel consumption compared to petrol engine. This statement is____________________?
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A. not true

B. true at full load

C. true at part load

D. true at both part and full load

E. there could not be any such criterion

1430. Kerosene is distilled at________________?
0

A. 65 220C

B. 350 450C

C. 220 350C

D. 450-550C

E. 30 65C

1431. In A-B-C control policy, maximum attention is given to__________________?
0

A. proper quality assurance program-mes

B. those items which consume money

C. those items which consume more money

D. those items which are not readily available

E. those x items which are in more demand

1432. The compression ratio of motor cars is___________________?
0

A. 10

B. 5

C. 13

D. 16

E. 7

1433. The time of completing a project in network analysis is given by following time of the critical activity meeting at the finalitiode_________________?
0

A. early finish

B. early start

C. none of the above

D. late start

E. late finish

1434. In the Emerson efficiency plan, a worker receives only his daily wage and no bonus is paid till his efficiency reaches__________________?
0

A. 90%

B. 50%

C. 75%

D. 80%

E. 661%

1435. Pick up the correct statement from the following?
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A. critical path method is event oriented

B. none of the above

C. critical.path method is not activity oriented

D. programmer evaluation and review technique is event oriented

E. programmer evaluation and review technique is not event oriented

1436. Isotropic materials are those which have the same ____________________?
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A. density throughout

B. electric and magnetic properties in all directions

C. stresses induced in all directions

D. thermal properties in all directions

E. elastic properties in all directions

1437. Tick the odd man out_______________?
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A. Parkinson

B. Galileo

C. Drucker

D. Taylor

E. McGregor

1438. Motion study involves analysis of________________?
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A. actions of operator

B. all of the above

C. layout of work place

D. tooling and equipment

E. none of the above

1439. Travel charts provide__________________?
0

A. an idea of the flow of materials at various stages

B. solution to handling techniques to achieve most optimum^ results

C. a compact estimate of the handling which must be done between various work sections

D. the information for changes required in rearranging material handling equipment

E. an approximate estimate of the handling which must be done at a particular station

1440. O on a PERT/CPM chart represents____________________?
0

A. a significant event representing some mile-stone

B. an ordinary event

C. dummy event

D. an event to be transferred to other network chart

E. dangling event

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