At normal atompsheric conditions, the ratio of the speed of sound in water to that in air is about
The sonic velocity in air at 15°C is about 340 m/s and that in water at the same temperature is about 1440 m/s.
The velocity of sound is largest in
Sonic velocity is higher in flow mediums with high bulk modulus and low density
The area velocity relationship for compressible fluid flow is
The continuity equation in differential form is
The differential form for energy in isentropic flow is
From the above two equations,
The speed of sound in oxygen at a pressure of 100 kPa (absolute) and 27°C is (Take R = 260 J/kg K and K = 1.4)
An airplane is flying at an altitude where the pressure is 20 kPa (absolute) and the density is 0.28 kg/m3. If the plane has attained a mach number of 1,8, what is the speed of plane in km/hr?
Velocity of sound,
A rocket is found to have a speed of 2160 km/hr in air at a temperature of -40°C. What is approximate Mach angle? [Take R = 287 J/kg K and K = 1.4]
Match List-1 (phenomena) with List-il (causes) and select the correct answer using the codes given below the lists:
The prime parameter causing change of state in a Fanno flow is
In Fanno Line Flow two assumptions are made
1. No friction
2. During the flow, no heat transfer is taking place.
Acoustic velocity in an elastic gaseous medium is proportional to
In a normal shock wave in one-dimensional flow