Top 1000+ Solved Fluid Mechanics (FM) MCQ Questions Answer
Q. If Velocity, pressure, density etc., do not change at a point with respect to time, flow is called
a. uniform
b. incompressible
c. non-uniform
d. steady
Q. If velocity, pressure, density etc., change at a point with respect to time, flow is called
a. uniform
b. compressible
c. unsteady
d. incompressible
Q. If the velocity in a fluid flow does not change with respect to length of direction of flow, it is called
a. steady flow
b. uniform flow
c. incompressible
d. rotational
Q. If the velocity in a fluid flow change with respect to length of direction of flow, it is called
a. unsteady flow
b. compressible flow
c. irrotational flow
d. none of the above
Q. If the density of the fluid is constant from point to point in a flow region, it is called
a. steady flow.
b. incompressible flow
c. uniform flow
d. rotational flow.
Q. If the density of the flow changes from point to point in a flow region, it is called
a. steady flow.
b. unsteady flow
c. non uniform
d. compressible
Q. The discharge through the trapezoidal channel is maximum when
a. half of the top width= sloping side
b. top width= half of the sloping side
c. top width= 1.5 x sloping side
d. none of the above
Q. The maximum velocity through a circular channel when depth flow is equal to
a. 0.95 x diameter
b. 0.5 x diameter
c. 0.81 x diameter
d. none of the above
Q. The maximum discharge through a circular channel takes place when depth of flow is equal to
a. 0.95 x diameter
b. 0.3 x diameter
c. 0.81 x diameter
d. 0.5 x diameter
Q. The most economical section is one for which a given cross sectional area, the slope of the bed (s)and coefficient of resistance has
a. maximum wetted perimeter
b. maximum discharge
c. maximum depth of flow
d. none of the above
Q. al to 2m and 1m respectively. If the flow is uniform and the value of Chezy’s constant is 60, thedischarge through the channel is
a. 1.0 m3/s
b. 1.5m3/s
c. 2.0m3/s
d. 3.0m3/s
Q. The hydraulic jump always occurs from
a. a m2 curve to a m1 curve
b. a h3 curve to a h1 curve
c. below normal depth to above normal depth
d. below critical depth to above critical depth