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Mechanical Engineering : Steam Boilers QUESTIONS AND ANSWERS :: part2 : 21 to 25
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
21.Water boils when its vapour pressure |
equals that of the surroundings |
equals 760 mm of mercury |
equals to atmospheric pressure |
equals the pressure of water in the con-tainer |
boiling has ^nothing to do with vapour pressure. |
22.In a throttling process |
heat transfer takes place |
work is done by the expanding steam |
internal energy of steam changes |
all of the above |
none of the above. |
23.The increase in pressure |
lowers the boiling point of a liquid |
raises the boiling point of a liquid |
.does not affect the boiling point of a liquid |
reduces its volume |
none of the above. |
24.In a throttling process |
steam temperature remaisn constant |
steam pressure remains constant |
steam enthalpy remains constant |
steam entropy remains constant |
steam volume remains constant. |
More Steam Boilers QUESTIONS AND ANSWERS available in next pages
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