How many throat/throats are there in a supersonic wind tunnel?

A)
1
B)
2
C)
3
D)
4

Correct Answer :   2

Explanation : In case of supersonic wind tunnels, there are two throats present. One is the nozzle throat where the sonic speed is achieved and the second throat is the diffuser throat where supersonic incoming flow is isentropically compressed to Mach 1.

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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