Civil Engineering - Airport Engineering - Discussion

Discussion Forum : Airport Engineering - Section 1 (Q.No. 32)
32.
Speed of
sound at 0°C is 1190 km p.h.
sound varies 2.4 km p.h. per degree centrigrade rise in temperature
sound at 0°C is called one Mach
an aircraft flying at 2975 km p.h., is called 2.5 Mach
All the above.
Answer: Option
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