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With increase in molecular weight of the gas the head developed...

This question belongs to Chemical Engineering Fluid Mechanics
Fluid Mechanics
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With increase in molecular weight of the gas, the head developed by a centrifugal compressor will

Answer & Solution
Correct Answer: Option A
The head developed by a centrifugal compressor is dependent on the kinetic energy imparted to the gas. The kinetic energy is directly related to the velocity of the gas molecules. With an increase in molecular weight of the gas, the average velocity of the gas molecules decreases due to higher mass. This results in a decrease in kinetic energy and consequently, a decrease in the head developed by the centrifugal compressor.
Hence, the correct answer is Option A: Decrease.
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3 Comments
Junaid Ahmad
Junaid Ahmad 2 years ago
Follow this link for detailed answer
https://www.eng-tips.com/viewthread.cfm?qid=469948#:~:text=However%2C%20in%20the%20well%20known,are%20fixed%2C%20the%20head%20decreases.
Mahender Naik
Mahender Naik 7 years ago
head= energy / weight
so as molecular weight increase then head decrease.
Yogesh Panchbhaiya
Yogesh Panchbhaiya 8 years ago
Sir plz explain the ans
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