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Question

For an ideal diffuser in steady flow, if mcv is the mass of air in its Control Volume (CV),then :

स्थिर प्रवाह में एक आदर्श विसारक के लिए, यदि mcv उसके नियंत्रण आयतन (CV) में वायु का द्रव्यमान है, तो:

A.


B.

the velocity of the air at exit is higher than at inlet of diffuser 

C.

the specific enthalpy of the air reduces from inlet to exit 

D.


Answer ( Option D)


Solution

For an ideal diffuser in steady flow :

1. The velocity of air at the exit is lower than that at entry.

2. The mass of control volume does not change with time or space therefore .

3. The pressure at the exit of diffuser is more than that at the entry.

Hence, the correct option is (D).

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