Top 1000+ Solved Fluid Mechanics (FM) MCQ Questions Answer
Q. Degree of reactions are most commonly used in
a. Turbomachinery
b. Pressure drag
c. Aerodynamics
d. Automobiles
Q. At high pressure, the voids can generate
a. Drag force
b. Mass density
c. Shock waves
d. Flow speed
Q. Voids that implode near metal surface develops a
a. Drag force
b. Cyclic stress
c. Shock waves
d. Flow speed
Q. In case of gas turbines and compressors, degree of reaction is
a. Static pressure drop in rotor/ static pressure drop in stage
b. Static pressure drop in stage/ static pressure drop in rotor
c. Isentropic enthalpy drop in rotor/ isentropic enthalpy drop in stage
d. Static temperature drop in stage/ static temperature drop in rotor
Q. The velocities of the blade angles can be found out using
a. Mach number
b. Froude’s number
c. Velocity triangles
d. Reynolds number
Q. Which among the following velocities cannot be found using the velocity triangle?
a. Tangential
b. Whirl
c. Relative
d. Parabolic
Q. Hydrodynamic cavitation is due to the process of
a. Vaporisation
b. Sedimentation
c. Filtration
d. Excavation
Q. The process of bubble generation leads to
a. High temperatures
b. High pressures
c. High energy densities
d. High volumetric ratio
Q. Degree of reaction turbine is the ratio of?
a. Pressure energy to total energy
b. Kinetic energy to total energy
c. Potential energy to total energy
d. Kinetic energy to potential energy
Q. Which of these options are best suited for the total energy change inside the runner per unit weight?
a. Degree of action
b. Degree of reaction
c. Turbulence
d. Efficiency of turbine
Q. Which of these ratios are termed to be hydraulic efficiency?
a. Water power to delivered power
b. Delivered power to input power
c. Power lost to power delivered
d. Runner power to water power
Q. When a container containing a liquid is rotated, then due to centrifugal action, then which of these energies are changed?
a. Kinetic energy
b. Pressure energy
c. Potential energy
d. Energy due to viscous force
Q. Discharge through a reaction flow reaction turbine is given by, Q =
a. Pi*d*b*Vf1
b. Pi*d*d*b*Vf1
c. Pi*d*b*b*Vf2
d. Pi*b*b*Vf1