Mechanical Engineering MCQs

2075 MCQs  (Page 151 of 208)

Attempt Mechanical Engineering Mcqs Quiz
Mechanical equivalent of heat for 1 kcal or Joule’s equivalent is equal to_________________?
A. 421 kgm
B. 421 kgm
C. 539 kgm
D. 102 kgm
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The evaporation of 15.653 kg of water per hour from and at 100°C is called_________________?
A. Evaporative capacity
B. Factor of evaporation
C. Equivalent evaporation
D. One boiler h.p.
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Cochran boiler is a__________________?
A. Horizontal fire-tube boiler
B. Horizontal water-tube boiler
C. Veritcal water-tube boiler
D. Vertical fire tube boiler
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During polytropic process_________________?
A. Heat transfer takes place across cylinder walls
B. Work is done
C. Steam may be wet, dry or superheated after expansion
D. All of the above
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Orsat meter is used for__________________?
A. Gravimetric analysis of the flue gases
B. Volumetric analysis of the flue gases
C. Mass flow of the flue gases
D. Measuring smoke density of flue gases
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An ideal regenerative cycle is ______________________?
A. Equal to carnot cycle
B. Less than carnot cycle
C. More than carnot cycle
D. Could be anything
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One kilowatt-hour energy is equivalent to ________________?
A. 1000 j
B. 360 kj
C. 3600 kj
D. 3600 kw/sec
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Lancashire ‘boiler is a__________________?
A. Stationary fire tube boiler
B. Stationary water tube boiler
C. Water tube boiler with natural/forced circulation
D. Mobile fire tube boiler
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100% efficiency of a thermal cycle cannot be achieved because of __________________?
A. Frictional losses
B. It is not possible to achieve 0°k temperature
C. Leakage
D. Non-availability of ideal substance
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The change in internal energy in steam engines equals to__________________?
A. Work done during the rankine cycle ;
B. Work done during compression.
C. Work done during adiabatic expansion
D. Change in enthalpy
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Word of the Day
28 Sep
Expatriate
a person who lives outside their native country.
ملک بدری، جلا وطن کرن، شہر بدر کرنا

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