Why in turbine used two critical speed band ?

Answer Posted / pvl

This depends on the design of the turbine. I worked with turbine with 4 critical speed bands. It is the natural harmonic frequency where there is maximum vibrations in the turbine. These speed bands can be more than one. Length, weight and steam entry type are the factors which decide the critical speed bands in a turbine.

Is This Answer Correct ?    0 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How does work A temperature valve or fv control valve in process plz brief me

1926


Describe the typical instrumentation used in monitoring the performance of a shell and tube heat exchanger.

1544


plz tell me clearly about PID.."when v have to change I value,D value,GAIN??

1693


Where Can i take a SPI INtools training in Mumbai? In Rolta India Ltd to whom I should approach regarding of SPI INtools Training?

2326


Reason for capillary type dp level transmitter fluctuation

1517






Define the difference between a stable versus an unstable controlled system and some of the tools you might use to be able to detect when this is happening and assumptions used for control system application design that could contribute to instability

1394


what is sil (safety integrity level

2204


i want formula for flow control.am doing project in flow control using orifice . i know value of the flow level(Q) . upstream(p1) pressure, orifice diameter(Do) , pipe diameter(Di) and oil viscosity(Vi) how can i calculate downstream pressure

1450


Can any body tell me about SAP MAINTINANCE MODULE. WHAT IS its function and application. And study material Source about it. I shall be very thankful.

1495


what are procedure of sox-nox calibration

2441


we are using centum vp as monitoring with Dell precision work station T3600 but some times PC(s) are restarted automatically . how we can solve this problem? thanks

1764


What are advantages and disadvantage of the ac supply load cell?

640


What is Predictive Maintenance

745


how will you check torque value during Factory acceptance Test for control valve/ESD ON/OFF VALE how will you confirm this torque value is being correct, Which document will you be refer.

2015


what is scale factor of proximitor & unit of the vibration.

1688