581. The speed of sound in an ideal gas varies as the
Temperature
Pressure
Density
None of these
✅ The correct answer is option A.
Fluid Mechanics MCQs
582. Most commonly used joint in the underground pipe lines is the
Sleevejoint
Coupling
Flange
Expansion joint
✅ The correct answer is option A.
583. A streamline is a line in flow field,
That is traced by all the fluid particles passing through a given point
Along which a fluid particle travels
Such that at every point on it, the velocity is tangential to it
None of these
✅ The correct answer is option C.
584. Froude number is not a factor
For Reynolds number greater than 300
When there is no vortex formation
For unbaffled tank
None of these
✅ The correct answer is option B.
585. In centrifugal pumps, cavitation occurs, when pressure of the impeller eye or vane becomes
Less than atmospheric pressure
More than liquid vapor pressure
Less than liquid vapor pressure
More than atmospheric pressure
✅ The correct answer is option C.
586. Mach number is the ratio of the speed of the
Fluid to that of the light
Light to that of the fluid
Fluid to that of the sound
Sound to that of the fluid
✅ The correct answer is option C.
587. What type of motion the fluid element undergoes, when it changes from one position to another position, such that the angle between the two sides change?
Rotation
Translation
Linear deformation
Angular deformation
✅ The correct answer is option D.
588. The discharge through a V-notch weir varies as
H3/2
H1/2
H5/2
H2/3
✅ The correct answer is option C.
589. Fluid flow through a packed bed is represented by the __________ equation.
Fanning’s
Ergun’s
Hagen-Poiseuille’s
None of these
✅ The correct answer is option B.
590. A spherical particle is falling slow in a viscous liquid such that Reynolds number is less than 1. Which statement is correct for this situation?
Inertial and drag forces are important
Drag, gravitational and buoyancy forces are impportant
Drag force and gravitational forces are important
None of the above
✅ The correct answer is option B.