Mechanical Engineering MCQs

2075 MCQs  (Page 91 of 208)

Attempt Mechanical Engineering Mcqs Quiz
If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly_________________?
A. Temperature
B. Enthalpy
C. Internal energy
D. Entropy
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An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is___________________?
A. Feasible
B. Impossible
C. Possible
D. Possible, but with lot of sophistications
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In a Carnot cycle, heat is transferred at_______________________?
A. Constant pressure
B. Constant volume
C. Constant temperature
D. Constant enthaply
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An adiabatic wall is one which__________________?
A. Prevents thermal interaction
B. Permits thermal interaction
C. Encourages thermal interaction
D. Discourages thermal interaction
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Compressed air coming out from a punctured football___________________?
A. Becomes hotter
B. Becomes cooler1
C. Remains at the same temperature
D. May become hotter or cooler depend-ing upon the humidity of the surround¬ing air
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During throttling process___________________?
A. Heat exchange does not take place
B. No work is done by expanding steam
C. There is no change of internal energy of steam
D. All of the above
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A sudden fall in the barometer reading is a sign of approaching________________?
A. Fine weather
B. Rains
C. Storm
D. Cold wave
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Calorie is a measure of
A. Specific heat
B. Quantity of heat
C. Thermal capacity
D. Entropy
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Barometric pressure is equal to_____________________?
A. 760 mm hg
B. Zero mm hg
C. 735.6 mm hg
D. 1 mm hg
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The first law of thermodynamics is the law of_________________?
A. Conservation of mass
B. Conservation of energy
C. Conservation of momentum
D. Conservation of heat
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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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