A. 1/√M
B. √M
C. 1/M
D. M
Related Mcqs:
- In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature) ?
A. 1/√T
B. 1/T
C. √T
D. T - A Rotameter through which air at room temperature and atmospheric pressure is flowing gives a certain reading for a flow rate of 100 cc/sec. If helium (molecular weight 4) is used and Rotameter shows the same reading, the flow rate (cc/sec) is__________________?
A. 26
B. 42
C. 269
D. 325 - Speed of sound in an ideal gas depends on its________________?
A. Temperature
B. Pressure
C. Specific volume
D. None of these - The speed of sound in an ideal gas varies as the __________________?
A. Temperature
B. Pressure
C. Density
D. None of these - The speed of a sound wave in a gas is analogous to the speed of ______________________?
A. An elementary wave in an open channel
B. Flow in an open channel
C. A disturbance travelling upstream in moving fluid
D. None of these - In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow ?
A. Discharge of water by a centrifugal pump being run at a constant rpm
B. Water flow in the suction and discharge pipe of a reciprocating pump
C. Water discharge from a vertical vessel in which constant level is maintained
D. Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe - With increase in molecular weight of the gas, the head developed by a centrifugal compressor will________________?
A. Decrease
B. Increase
C. Remain same
D. Unpredictable - The energy loss in flow through Venturimeter is less than that through flow nozzle, because in case of a flow nozzle, the ?
A. Length is shorter
B. Throat diameter is more
C. Sudden expansion of flow in the downstream occurs
D. Distance between the throat and the inlet is more - Bernoulli’s equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli’s equation? A. Fluid flow is frictionless & irrotational. B. Fluid flow is steady. C. Fluid flow is uniform & turbulent. D. Fluid is compressible. E. Fluid is incompressible ?
A. A, C, D
B. B, D, E
C. A, B, E
D. A, D, E - For flow past a flat plate, if „x‟ is the distance along the plate in the direction of flow, the boundary layer thickness is proportional to________________?
A. √x
B. 1/√x
C. x
D. 1/x
