A. Drag stress to inertial stress
B. Inertial stress to drag stress
C. Inertial stress to gravitational stress
D. Gravitational stress to drag stress
Related Mcqs:
- Reynolds number is the ratio of____________________?
A. Viscous forces to gravity forces
B. Inertial forces to viscous forces
C. Viscous forces to inertial forces
D. Inertial forces to gravity forces - A centrifugal pump has the following specifications: Power = 4 H.P.; Speed = 800 rpm Head = 8 metres Flow = 1000 litres/minutes. If its speed is halved, the power consumed now will be _____________ hp?
A. 0.5
B. 2
C. 4
D. 1 - For turbulent flow of Newtonian fluid in a circular cross-section pipe, the ratio of maximum to average fluid velocity is ________________?
A. 0.5
B. 1
C. 0.66
D. < 0.5 - The pressure co-efficient is the ratio of pressure forces to ______________ forces?
A. Viscous
B. Inertial
C. Gravity
D. Surface tension - Weber number is the ratio of inertial force to _____________ force?
A. Surface tension
B. Gravity
C. Viscous
D. Elastic - Mach number is defined as the ratio of the local flow velocity to the sonic velocity in the fluid. For what value of Mach number, the gases are considered incompressible ?
A. < 0.3
B. > 3
C. 50
D. 1 - With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost________________?
A. Increases
B. Decreases
C. Remains unchanged
D. Increases exponentially - The ratio of width to depth for the most economical rectangular section in open channel flow is_________________?
A. 0.5
B. 1
C. 1.5
D. 2 - In open channel flow in a rectangular channel, the ratio between the critical depth and the initial depth, when a hydraulic jump occurs is_________________?
A. 0.5
B. 0.84
C. 1.84
D. 1.25 - The ratio of hydrodynamic boundary layer to thermal boundary layer thickness in case of liquid metals is__________________?
A. < 1
B. 1
C. > 1
D. 2
