The ratio of velocity of fluid in an undisturbed stream to the velocity of sound wave is known as Mach number.

Related MCQs

• If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be
• When the Mach number is between __________ the flow is called super-sonic flow.
• Mach number is significant in
• A flow is called hyper-sonic, if the Mach number is
• A flow is called sub-sonic, if the Mach number is
• For hypersonic flow, the Mach number is
• When the Mach number is more than 6, the flow is called
• When the Mach number is between
• When the Mach number is less than unity, the flow is called
• When the Mach number is equal to unity, the flow is called sonic flow.