πŸ“Š Heat Transfer
Q. A correction of LMTD is necessary in case of
  • (A) Parallel flow heat exchanger
  • (B) Counter current heat exchanger
  • (C) Cross flow heat exchanger
  • (D) All of the above
πŸ’¬ Discuss
βœ… Correct Answer: (C) Cross flow heat exchanger
πŸ“Š Heat Transfer
Q. The dimensions of thermal conductivity are
  • (A) MLT-3 ?-1
  • (B) MLT?3
  • (C) ML-1T2 ?
  • (D) MLT2 ?2
πŸ’¬ Discuss
βœ… Correct Answer: (A) MLT-3 ?-1
πŸ“Š Heat Transfer
Q. In which of the following heat exchange process, the value of overall heat transfer coefficient will be highest?
  • (A) Air to carbondioxide
  • (B) Air to heavy tars
  • (C) 37,500 kg
  • (D) Steam condensers
πŸ’¬ Discuss
βœ… Correct Answer: (D) Steam condensers
πŸ“Š Heat Transfer
Q. A grey body has emissivity
  • (A) 37,500 kg
  • (B) 1
  • (C) less than 1
  • (D) more than 1
πŸ’¬ Discuss
βœ… Correct Answer: (C) less than 1
πŸ“Š Heat Transfer
Q. A thin circulr disc has a concentric hole in it. On heating the diameter of hole will
  • (A) decrease
  • (B) remain constant
  • (C) 37,500 kg
  • (D) increase
πŸ’¬ Discuss
βœ… Correct Answer: (D) increase

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