Dear Readers, Welcome to STEAM TURBINES Lab VIVA Interview Questions and Answers have been designed specially to get you acquainted with the nature of questions you may encounter during your Job interview for the subject of STEAM TURBINES Lab VIVA Questions. These STEAM TURBINES Lab VIVA Questions are very important for campus placement test and job interviews. As per my experience good interviewers hardly plan to ask any particular questions during your Job interview and these model questions are asked in the online technical test and interview of many IT & Non IT Industries.
1. According to details of design, the steam turbines may be classified as impulse or reaction.
2. The total pressure drop for the stage is taken across the nozzles.
3. The flow through the rotor blades is substantially at constant static pressure.
4. Multivelocity stages occur in ______ turbine.
5. The total pressure drop assigned to the stage is divided equally between the stationary blades and the rotor blades.
6. The ______ buckets do much more turning of the steam.
7. Blade length/steam passage width.
8. Leakage loss of steam between inner circumference of stationary element and rotor is minimised by maintaining minimum practical clearance and by use of
9. In stages with short blades, the best net efficiency obtains with near design.
10. The presence of moisture in the steam causes extra
11. The ratio of total internal used energy to the isentropic available energy.
12. In condensing turbines expanding to high vacuum, the ratio of volume of steam at exhaust to that at inlet is around
13. keep the rotor turning at slow speed to maintain uniform temperature when the turbine is shutdown and cooling.
14. on the turbine rotor is caused by pressure and velocity differences across the rotor blades.
15. The performance of central-station turbine-generators is generally expressed as _______.
16. The unit of heat rate is _______.
2. impulse stage
5. reaction stage
7. aspect ratio
8. labyrinth packings
11. internal efficiency
13. turning gear
14. axial thrust
15. heat rate
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