This set of Steam and Gas Turbines Multiple Choice Questions & Answers (MCQs) focuses on “Blade Entrance and Exit Angles, Angle of Efflux”.
1. Angle made by relative velocity vector with horizontal line is called as __________
a) blade entrance angle
b) exit angle
c) entrance angle
d) none of the mentioned
View Answer
Explanation: Blade entrance angle is the angle with which steam enters the blade. Hence it is the angle made by relative velocity to the horizontal.
2. Blade entrance angle is represented by _________
a) Alpha
b) Theta
c) phi
d) None of the mentioned
View Answer
Explanation: Blade entrance angle is represented by Phi. Where as Theta is used to represent the Nozzle angle.
3. Angle made by the absolute velocity of steam to the horizontal is called as __________
a) blade entrance angle
b) nozzle angle
c) outlet angle
d) none of the mentioned
View Answer
Explanation: Nozzle angle is the angle made by the absolute velocity vector with a horizontal line.
4. Nozzle angle is represented by ______
a) Alpha
b) Beta
c) Theta
d) None of the mentioned
View Answer
Explanation: Nozzle angle is represented by theta.
5. Angle made by the relative velocity vector entering the fixed blades to the horizontal line is called as ____________
a) blade entrance angle
b) blade exit angle
c) nozzle angle
d) none of the mentioned
View Answer
Explanation: Blade exit angle is the angle made by the relative velocity vector entering the fixed blades to the horizontal line.
6. Blade exit angle is represented by _______
a) Theta
b) Alpha
c) Gamma
d) None of the mentioned
View Answer
Explanation: Theta is used to represent nozzle angle and gamma is used to represent blade exit angle.
7. Angle made by the absolute velocity vector of steam and blade velocity vector is called as _______
a) nozzle angle
b) exit angle
c) none of the mentioned
d) fluid exit angle
View Answer
Explanation: Fluid exit angle is the angle made by the absolute velocity vector of fluid and the blade velocity vector.
8. Fluid exit angle is represented by _______
a) Theta
b) Gamma
c) Delta
d) None of the mentioned
View Answer
Explanation: Theta is used to represent nozzle angle and gamma is used to represent Blade exit angle and Delta is used to represent fluid exit angle.
9. Angle between surface of target and plane perpendicular to the nozzle central line is called as _______
a) blade exit angle
b) reversal efflux angle
c) nozzle angle
d) none of the mentioned
View Answer
Explanation: Angle between surface of target and plane perpendicular to nozzle central line is called a efflux angle.
10. Angle of vector drawn normal to the exit is called as ______
a) reversal efflux angle
b) nozzle angle
c) blade angle
d) none of the mentioned
View Answer
Explanation: Angle of vector drawn normal to the exit is called a reversal efflux angle.
Sanfoundry Global Education & Learning Series – Steam and Gas Turbines.
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