Top 1000+ Solved Fluid Mechanics (FM) MCQ Questions Answer

a. a circular disc or plate held normal to flow

b. a sphere

c. a cylinder

d. an airfoil

a. constant

b. dependent only on Reynolds number

c. a function of Reynolds number and relative roughness

d. dependent on relative roughness only

a. 0.1

b. 0.01

c. 0.001

d. 0.0001

a. directly proportional to Reynolds number and independent of pipe wall roughness

b. directly proportional to pipe wall roughness and independent of Reynolds number

c. inversely proportional to Reynolds number and indpendent of pipe wall roughness

d. inversely proportional to Reynolds number and directly proportional to pipe wall roughness

a. the pressure intensity reaches a minimum

b. the cross-section of a channel is reduced

c. the boundary layer comes to rest

d. all of the above

a. 1/2

b. 2/3

c. 3/2

d. 2

a. 1/3 R

b. 1/2 R

c. 2/3 R

d. 3/4R

a. laminar flow

b. transition flow

c. turbulent flow

d. not predictable from the given data

a. zero at the pipe wall

b. maximum at the pipe wall

c. independent of shear stress

d. none of the above

a. is constant over the cross-section

b. varies linearly from zero at walls to maximum at centre

c. varies parabolically with maximum at the centre

d. none of the above

a. less than 1 m/sec

b. 1 m/sec

c. 1.5 m/sec

d. 2 m/sec

a. laminar flow

b. transition flow

c. turbulent flow

d. critical flow

a. always occurs before a separation point

b. always occurs after a separation point

c. is a region of high pressure intensity

d. none of the above

a. 0

b. r/2

c. r

d. 2r

a. always above the centre line of pipe

b. never above the energy grade line

c. always sloping downward in the direction of flow

d. all of the above