mechanical engineering MCQs – Page 54

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 Review each marked answer and report any item that may be outdated or unclear.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

1061. A point on a link connecting double slider crank chain traces a____________________?
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A. ellipse

B. circle

C. straight line

D. parabola

E. hyperbola

1062. Which of the following parameters is constant for a mole for most of the gases at a given temperature and pressure___________________?
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A. enthalpy

B. specific volume

C. mass

D. volume

E. entropy

1063. The unit of energy in S.I. units is________________?
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A. joule m.

B. joule/s

C. watt

D. joule

E. joule/m

1064. Carnot cycle has maximum efficiency for__________________?
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A. petrol engine

B. new engine

C. reversible engine

D. diesel engine

E. irreversible engine

1065. The more effective way of increasing efficiency of Carnot engine is to____________________?
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A. decrease higher temperature

B. increase lower temperature

C. keep lower temperature constant

D. increase higher temperature

E. decrease lower temperature

1066. Barometric pressure is equal to_____________________?
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A. zero mm Hg

B. 760 mm Hg

C. 1 mm Hg

D. 100mm Hg

E. 735.6 mm Hg

1067. The term scavenging is generally associated with______________________?
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A. 4-stroke cycle engines

B. aeroplane engines

C. diesel engines

D. 2-stroke cycle engines

E. high efficiency engines

1068. The connecting rod bolts are tightened up so that tightening stress _________________?
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A. none of the above

B. approaches yield point

C. is 50% of yield point

D. is about yield point divided by safety factor

E. is just sufficient to hold parts together

1069. Statistical quality control techniques are based on the theory of___________________?
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A. quality

B. probability

C. none of the above

D. all of the above

E. statistics

1070. Routing prescribes the_________________?
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A. inspection of final product

B. proper utilization of machines

C. flow of material in the plant

D. none of the above

E. proper utilization of man power

1071. Which of the following pipe joints would be suitable for pipes carrying steam_____________?
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A. threaded

B. flanged

C. bell and spigot

D. expansion

E. compression

1072. A hot short metal is_________________?
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A. brittle when hot

B. brittle under all conditions

C. brittle when cold

D. hard when hot

E. ductile at high temperature

1073. The following type of nut is used with alien bolt____________________?
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A. any one of the above

B. castle nut

C. slotted nut

D. alien nut

E. hexagonal nut

1074. The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be________________?
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A. remain unaffected

B. higher

C. lower

D. none of the above

E. unpredictable

1075. Fuel oil consumption guarantees for I .C. engine are usually based on__________________?
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A. calorific value of fuel

B. net calorific value of oil

C. high heat value of oil

D. all of the above

E. low heat value of oil

1076. Combustion in compression ignition engines is____________________?
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A. homogeneous

B. heterogeneous

C. both A. and B.

D. laminar

E. turbulent

1077. Current assets include_______________?
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A. common stock held by the firm

B. inventories

C. manufacturing plant and equipment

D. manufacturing plant

E. all of the above

1078. The specific fuel consumption per BH hour for a petrol engine is approximately__________________?
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A. 0.25 kg

B. 0.2 kg

C. 0.15 kg

D. 0.3kg

E. 0.35 kg

1079. In the Halsey system of wage incentive plan, a worker is ________________?
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A. not paid any bonus till his efficiency

B. never a loser

C. induced to do more work

D. paid as per efficiency

E. ensured of minimum wages

1080. Product layout is employed for____________________?
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A. effective utilization of machine

B. all of the above

C. none of the above

D. continuous production

E. batch production

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