Top 350+ Solved Turbine MCQ Questions Answer
Q. In which of following turbine whirl component is zero?
a. Reaction turbine
b. Inward radial flow reaction turbine
c. Axial flow turbine
d. Impulse turbine
Q. Discharge in inward flow reaction turbine
a. Increases
b. Decreases
c. Remains constant
d. Gradually decreases
Q. Speed control of Outward flow reaction turbine is
a. Easy
b. Moderate
c. Difficult
d. Very difficult
Q. Centrifugal head in inward flow reaction turbine
a. Increases
b. Decreases
c. Remains constant
d. Gradually decreases
Q. Tendency of wheel to race is almost nil in turbine
a. Inward flow reaction turbine
b. Outward flow reaction turbine
c. Impulse turbine
d. Axial flow turbine
Q. The formation of vapour cavities is called
a. Static pressure drop
b. Cavitation
c. Isentropic expansion
d. Emulsion
Q. Voids are created due to
a. Reaction ratio
b. Pressure ratio
c. Liquid free layers
d. Volumetric layers
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