Steam and Gas Turbines Interview Questions and Answers for experienced on “Blade Angle, Gauging and Pitch, Width and Height”.
1. Ram Air turbine generates ________ from air stream.
a) losses
b) power
c) work
d) none
Answer: b
Clarification: Ram Air turbine generates power from air stream.
2. Ram Air turbine can be connected to hydraulic pump.
a) True
b) False
Answer: a
Clarification: Ram air turbine can be connected to generator or hydraulic pump.
3. In steam and gas turbines Casing contains controls for working fluids.
a) True
b) False
Answer: a
Clarification: In steam and gas turbines casing over turbine blades contains controls for working fluids.
4. When pressure drop is in stages then that turbine is called as ________
a) velocity compounded impulse turbine
b) pressure compounded impulse turbine
c) velocity compounded reaction turbine
d) none of the mentioned
Answer: b
Clarification: In pressure compounded impulse turbine pressure drop is in several stages and pressure loss is reduced.
5. Steam velocities in pressure compounding is ______
a) low
b) high
c) velocity has nothing to do with pressure compounding
d) none of the mentioned
Answer: a
Clarification: In pressure compounding the Conversion of kinetic energy in work is in several small stages and hence velocity of steam is low.
6. In parsons turbine to increase area between blades its height is to be ________
a) height has nothing to do with area between blades
b) decreased
c) increased
d) none of the mentioned
Answer: c
Clarification: In parsons turbine velocity is increased and as a result area between the blades is to be increased and it was increased by tapering the blade height.
7. If specific volume of steam increases its blade height _______
a) increases
b) decreases
c) not related with each other
d) none of the mentioned
Answer: a
Clarification: If the specific volume of steam increases its area need to be increased and hence its blade height is increased.
8. Blade entrance angle is measure for __________
a) stationary blades
b) moving blades
c) stationary & moving blades
d) none of the mentioned
Answer: b
Clarification: Steam initially enters moving blades and hence blade entrance angle is measured for moving blades.
9. Blade exit angle is a measure for _________
a) moving & fixed blade
b) moving blade
c) fixed blade
d) none of the mentioned
Answer: c
Clarification: Steam exits the moving blade and then it enters fixed blade and hence blade exit angle is measured at fixed blades.
10. Nozzle exit angle is the measure of angle with which steam is leaving the nozzle.
a) True
b) False
Answer: a
Clarification: Nozzle exit angle is the angle with which steam exits the nozzle.
Steam and Gas Turbines for interviews,