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.Management Sciences
A. both the fluids at inlet (of heat ex¬changer where hot fluid enters) are in their coldest state
B. both the fluids at inlet are in their hot¬test state
C. both the fluids .at exit are in their hottest state
D. one fluid is in hottest state and other in coldest state at inlet
E. any combination is possible depending on design of heat exchanger
Related Mcqs:
- Unit of thermal conductivity in M.K.S. units is ___________________?
- A. kcal/kg m2 °C B. kcal-m/hr m2 °C C. kcal/hr m2 °C D. kcal-m/hr °C E. kcal-m/m2 °C...
- Metals are good conductors of heat because________________?
- A. their atoms collide frequently B. their atoms-are relatively far apart C. they contain free electrons D. they have high density E. all of the above...
- Thermal diffusivity is ____________________?
- A. a dimensionless parameter B. function of temperature C. used as mathematical model D. a physical property of the material E. useful in case of heat transfer by radiation...
- In heat exchangers, degree of approach is defined as the difference between temperatures of________________?
- A. cold water inlet and outlet B. hot medium inlet and outlet C. hot medium outlet and cold water inlet D. hot medium outlet and cold water outlet E. none of the above...
- The thermal diffusivities for gases are generally_____________________?
- A. more than those for liquids B. less than those for liquids C. more than those for solids D. dependent on the viscosity E. same as for the liquids...
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