Which of these properties remain constant in the ideal isentropic supersonic diffuser?

A)
Velocity
B)
Mass flow
C)
Total pressure
D)
Mach number

Correct Answer :   Total pressure

Explanation : Isentropic supersonic diffusers have a constant entropy throughout the diffuser duct. Since the entropy is constant, the total pressure along is the duct is also constant.

Recently Updated in Aerodynamics Questions
What is the relation between the nozzle A1t and diffuser throat area A2t in the supersonic wind tunnel?
A)
At2 = At1
B)
At2 < At1
C)
At2 > At1
D)
At2 At1 = 1

Correct Answer : Option (C) :   At2 > At1

In which scenario is the throat area of both the nozzle and diffuser the same?
A)
Ideal isobaric diffuser
B)
Ideal isentropic diffuser
C)
Ideal Isochoric diffuser
D)
Ideal adiabatic diffuser

Correct Answer : Option (B) :   Ideal isentropic diffuser

What is the ratio of throat area of diffuser to nozzle in supersonic wind tunnel with flow at Mach 2.7?
A)
0.4236
B)
0.8338
C)
1.199
D)
2.36

Correct Answer : Option (D) :   2.36

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