Applications Questions Set 30:
Which property of rubber gives rise to the rolling resistance of tires?
Solution:
The coefficient of performance (COP) of a reverse Carnot cycle does not depend on which of the following?
Solution:
For a Kaplan turbine, the hydraulic efficiency is 97%, the mechanical efficiency is 91%, and the volumetric efficiency is 99%. Calculate the overall efficiency.
Solution:
In a refrigeration system, why are expansion devices located closer to the evaporator?
Solution:
Domestic refrigerators working on the vapor compression cycle use which of the following types of expansion devices?
Solution:
What is the ratio of the volume of charge admitted at normal temperature and pressure (N.T.P.) to the swept volume of the piston called?
Solution:
A gas engine has a swept volume of 600 cm³ and clearance volume of 45 cm³. Its volumetric efficiency is 0.89 and mechanical efficiency is 0.92. What is the volume of the mixture taken in per stroke (cm³)?
Solution:
Out of the following statements, which one is not a limitation of the Carnot cycle with air or gas as the refrigerant?
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Which of the following statements is correct about a saturated air-water vapor mixture?
Solution:
The Sprung Mass of a vehicle is the mass supported by the Suspension System, while Unsprung Mass is the one which the Suspension System does not support. Total Vehicle mass is the sum of the Sprung and Unsprung Mass. Consider the following statements:
- Vehicle Performance is only dependent on Unsprung Mass
- Vehicle Performance is dependent on the Ratio of Sprung to Unsprung mass
- The vehicle will perform better as the Ratio of Sprung to Unsprung mass increases
- Vehicle Performance is independent of Sprung and Unsprung Mass
Which of the following statements is/are correct?
Solution:
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