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MCQs

Total Questions : 26 | Page 2 of 3 pages
Question 11. The unfolding of regular secondary structure causes
  1.    little increase in the entropy of protein
  2.    large decrease in the entropy of the protein
  3.    no change in the entropy of the protein
  4.    large increase in the entropy of the protein
 Discuss Question
Answer: Option D. -> large increase in the entropy of the protein
Answer: (d).large increase in the entropy of the protein
Question 12. Consider system A at uniform temperature t and system B at another uniform temperature T (t > T). Let the two systems be brought into contact and be thermally insulated from their surroundings but not from each other. Energy will flow from system A to system B because ofConsider System A At Uniform Temperature T And System B At A...
  1.    Temperature difference
  2.    Energy difference
  3.    Mass difference
  4.    Volumetric difference
 Discuss Question
Answer: Option A. -> Temperature difference
Answer: (a).Temperature difference
Question 13. Unit of rate of heat transfer isUnit Of Rate Of Heat Transfer Is
  1.    Joule
  2.    Newton
  3.    Pascal
  4.    Watt
 Discuss Question
Answer: Option D. -> Watt
Answer: (d).Watt
Question 14. Convective heat transfer coefficient doesn’t depend onConvective Heat Transfer Coefficient Doesn’t Depend On
  1.    Surface area
  2.    Space
  3.    Time
  4.    Orientation of solid surface
 Discuss Question
Answer: Option A. -> Surface area
Answer: (a).Surface area
Question 15. The literature of heat transfer generally recognizes distinct modes of heat transfer. How many modes are there?The Literature Of Heat Transfer Generally Recognizes Distinc...
  1.    One
  2.    Two
  3.    Three
  4.    Four
 Discuss Question
Answer: Option C. -> Three
Answer: (c).Three
Question 16. An oil cooler in a high performance engine has an outside surface area 0.12 m² and a surface temperature of 65 degree Celsius. At any intermediate time air moves over the surface of the cooler at a temperature of 30 degree Celsius and gives rise to a surface coefficient equal to 45.4 W/ m² K. Find out the heat transfer rate?An Oil Cooler In A High Performance Engine Has An Outside Su...
  1.    238.43 W
  2.    190.68 W
  3.    543.67 W
  4.    675.98 W
 Discuss Question
Answer: Option B. -> 190.68 W
Answer: (b).190.68 W
Question 17. The rate equation used to describe the mechanism of convection is called Newton’s law of cooling. So rate of heat flow by convection doesn’t depend on
  1.    Convective heat transfer coefficient
  2.    Surface area through which heat flows
  3.    Time
  4.    Temperature potential difference
 Discuss Question
Answer: Option C. -> Time
Answer: (c).Time
Question 18. Which of the following is an example of forced convection?
  1.    Chilling effect of cold wind on a warm body
  2.    Flow of water in condenser tubes
  3.    Cooling of billets in the atmosphere
  4.    Heat exchange on cold and warm pipes
 Discuss Question
Answer: Option B. -> Flow of water in condenser tubes
Answer: (b).Flow of water in condenser tubes
Question 19. How many types of convection process are there?
  1.    One
  2.    Three
  3.    Four
  4.    Two
 Discuss Question
Answer: Option B. -> Three
Answer: (b).Three
Question 20. Thermal conductivity is maximum for which substance
  1.    Silver
  2.    Ice
  3.    Aluminum
  4.    Diamond
 Discuss Question
Answer: Option D. -> Diamond
Answer: (d).Diamond

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