Fluid Mechanics for Chemical MCQs

A. Mean flow velocity is about 0.5 times the maximum velocity
B. Velocity profile becomes flatter and flatter with increasing reynolds number
C. Point of maximum instability exists at a distance of 2r/3 from the pipe wall (r = pipe radius)
D. Skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity

A. Froude
B. Euler
C. Reynold
D. Mach

A. Decreasing the size of the inlet pipe
B. Increasing the size of the inlet pipe
C. Lowering the pump position
D. Both b. and c.

A. A storage device and a control valve
B. A cylinder and a plunger
C. Two pistons and two cylinders
D. A storage tank and a ram pump

A. Not a function of the roughness of pipe wall
B. Inversely proportional to reynolds number
C. Both a. & b.
D. Neither a. nor b.

A. Linearly as the viscosity
B. Inversely as the pressure drop
C. Inversely as the viscosity
D. As the square of the radius

A. Weber
B. Mach
C. Froude
D. Reynold

A. Reciprocating compressor
B. Blower
C. Axial flow compressor
D. Centrifugal compressor

A. Conversion of kinetic head to pressure head is facilitated
B. Conversion of pressure head to kinetic head is facilitated
C. Power transmitted through the nozzle is maximum, when the head lost due to friction in the
PipE is equal to one third of the total supply head

A. Decrease
B. Increase
C. Remain same
D. Unpredictable