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  • Question

  • When tc1 and tc2 are the temperatures of cold fluid at entry and exit respectively and th1 and th2 are the temperatures of hot fluid at entry and exit point, and cold fluid has lower heat capacity rate as compared to hot fluid, then effectiveness of the heat exchanger is given by


  • Options
  • A. When tc1 and tc2 are the temperatures of cold fluid at entry and exit respectively and th1 and th2 a
  • B. When tc1 and tc2 are the temperatures of cold fluid at entry and exit respectively and th1 and th2 a
  • C. When tc1 and tc2 are the temperatures of cold fluid at entry and exit respectively and th1 and th2 a
  • D. When tc1 and tc2 are the temperatures of cold fluid at entry and exit respectively and th1 and th2 a

  • Correct Answer
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    • More questions

    • 1. The angle of inclination of a vehicle when moving along a circular path __________ upon its mass.

    • Options
    • A. depends
    • B. does not depend
      • Discuss
    • 2. A steel containing ferrite and pearlite is

    • Options
    • A. hard
    • B. soft
    • C. tough
    • D. hard and tough
      • Discuss
    • 3. In forced circulation steam boilers, the force is applied

    • Options
    • A. to draw water
    • B. to circulate water
    • C. to drain off the water
    • D. all of these
      • Discuss
    • 4. The high steam and low water safety valve is not used in

    • Options
    • A. Cochran boiler
    • B. Cornish boiler
    • C. Lancashire boiler
    • D. Locomotive boiler
      • Discuss
    • 5. The welding process used to join the ends of two pipes of uniform cross-section, is

    • Options
    • A. spot welding
    • B. seam welding
    • C. projection welding
    • D. upset butt welding
      • Discuss
    • 6. A grate, in a boiler, is a place in the combustion chamber upon which fuel (wood or coal) is burnt.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is

    • Options
    • A. reversed Carnot cycle
    • B. reversed Joule cycle
    • C. reversed Brayton cycle
    • D. reversed Otto cycle
      • Discuss
    • 8. The function of a second ring is that it is a

    • Options
    • A. back up compression ring which will work in place of the top ring when it is broken
    • B. compression ring and aids the top ring in sealing and cooling
    • C. back up oil control ring which will work in place of the bottom ring when it is broken
    • D. cushion ring which prevents piston slap and knock
      • Discuss
    • 9. Which of the following statement is correct in regard to centreless grinding?

    • Options
    • A. The workpiece is supported throughout its entire length as grinding takes place.
    • B. It is a continuous process and adopted for production work.
    • C. It requires no holding device for the work.
    • D. all of the above
      • Discuss
    • 10. In a framed structure, as shown in the below figure, the force in the member AB is __________ the force in member AC.

    • Options
    • A. half
    • B. equal to
    • C. double
      • Discuss

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