What is critical speed of turbine

Answers were Sorted based on User's Feedback



What is critical speed of turbine..

Answer / dspatel10

turbine shaft material has own natural frequency. when turbine rotate on such a speed that freq. of shaft becomes close ti its natural freq., thereby causing noise and high vibration in the machine because of the resonance. shaft becomes dynamically unstable and large vibration is developed . it occurs at a speed called critical speed.

Is This Answer Correct ?    17 Yes 0 No

What is critical speed of turbine..

Answer / pradeep.m

If system frequency (Turbine shaft frequency) match with natural frequency resonance will occur.So turbine vibration is more at that period of speed. That speed is known as critical speed of the turbine.

Is This Answer Correct ?    5 Yes 0 No

What is critical speed of turbine..

Answer / vamsi balayapalli

At start up turbine rotates slowly upto reach 3000rpm, at one perticular speed shaft frequency matches with natural frequency due to that resonance condition high vibrations and noise . Normally 1600rpm is critical speed for 210mw thermal unit

Is This Answer Correct ?    0 Yes 1 No

What is critical speed of turbine..

Answer / damotharan

It is the speed at which the machine vibrates most violently. It is due to many causes, such as imbalance or harmonic vibrations set up by the entire machine. To minimize damage, the turbine should be hurried through the known critical speed as rapidly as possible. (Caution, be sure the vibration is caused by critical speed and not by some other trouble).

Is This Answer Correct ?    0 Yes 1 No

What is critical speed of turbine..

Answer / kousik karmakar

Only 210MW C speeds is 1585.1881.2017.2489.4500 rpm

Is This Answer Correct ?    1 Yes 7 No

What is critical speed of turbine..

Answer / naser

2733RPM

Is This Answer Correct ?    3 Yes 11 No

Post New Answer

More Power Plant Engineering Interview Questions

What should be the neutral and body grounding sysytem for grid (132 KV) parallel generators (440 volts)?

1 Answers   Rahimafrooz,


whatis means of PPA & FSA OR SFA in power plant operation

2 Answers  


what is restricted earth fault explain in details

0 Answers   Greenko, JSW,


what is the trip circuit supervision in an electrical meaning?

0 Answers   IOCL,


1. what is meant by burner tilting?

3 Answers  






Where is the pressure reduce valve in the power plant

6 Answers   Grasim,


Why the steam Turbines are Designed Higher side compare to Alternator

1 Answers  


What are the special criteria under which FD fans are switched off during MFT.

1 Answers  


Planning Engineer interview model question and answer

1 Answers   Tata Power,


63.5 ohm NGR is connected with our gas engine genrator running at 500 rpm, 50 hz and synched with WAPDA at 6.3 KV bus voltages, 2500A and 25KA(1 sec). can some one give me proper calculations how it comes 63.5ohm?????

2 Answers   UET,


Which will have more strain energy 1.Spring 2.Circular disc 3.Solid square plate.

0 Answers  


How We Calibrate the vaccum transmitter?

0 Answers  


Categories
  • Civil Engineering Interview Questions Civil Engineering (5084)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16631)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1094)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)