Heat & Mass Transfer (HMT) important questionsMost repeated in SPPU papers
These 12 questions appeared in more than one SPPU Heat & Mass Transfer paper we have: 7 papers, from Jul 2022 to Nov 2025. The most-asked come first. Each one links to the papers it was asked in.
Repeated questions
Endsem questions (11)
- 5×asked
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- 3×asked
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- 2×asked
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- 2×asked
The molecular weights of the two components A and B of a gas mixture are 24 and 28 respectively. The molecular weight of gas mixture is found to be 30. If the mass concentration of the mixture is 1.2 kgm 3 , determine the following. i) Molar fractions ii) Mass fractions iii) Total pressure if temperature of mixture is 290K
- 2×asked
A counter-flow double pipe heat exchanger using superheated steam is used to heat water at the rate of 10500kg/h. The stem enters the heat exchanger at 180°C and leaves at 130°C. The inlet and exit temperatures of water are 30°C and 80°C respectively. If Overall Heat Transfer Coefficient from steam to water are 30°C and 80°C respectively. If over- all heat transfer coefficient from steam to water is 814W/m 2 °C, Calculate the heat transfer area. What would be the increase in area if the fluid flows were parallel?
Insem questions (1)
- 2×asked
Questions count as repeated when their wording matches closely across papers. Numericals that depend on a figure are left out, since the figure changes from paper to paper.