Interested to Buy Any Domain ? << Click Here >> for more details...
Why rotating machines are not allowed to run near critical
speed region?
- 2 Answers
- 6555 Views
- I also Faced
- E-Mail Answers
Answer Posted / iamdon
The rotor is a structure having mass and elasticity.So it
will vibrate with a natural fcrequency which is balanced by
elastic force.The mass centre has an inherent eccentricity
from the centre of rotation.
The deflection tend to be very large near or at critical
speed and gives rise to considerable vibrations.This may
break the shaft.That is why rotating machines are not
allowed to run near or at critical speed.
Author:arbelectbit@yahoo.com
| Is This Answer Correct ? | 7 Yes | 1 No |
Post New Answer View All Answers
In a Impedance Based Distance Relay (Quad Characteristics) - Could there be two different Line Angle(RCA) for Ph-Ph & Ph-Gnd? If So Kindly Let me Know.. Where, What are the advantages of the same?
How we calculate the size of ht cable for any transformer
What are the advantages and disadvantages of short-pitched winding?
How the frame size of a flange mounted AC induction motor is calculated?
for 5KW resistive load can anyone please suggest me whether to go for UPS/Inverter or Generator depending upon cost calulations
how does the thyistor work in dc drive?
what is The difference between national electrical code and I.S.Code (electrical) and what is the value of NEC in electrical engineering field
What is the current carrying capacity of 35sq.mm flexible cable?
explain the mode of metal iranafer in Co,welding
In the N-series schneider reclosers. What is the difference between current during fault time and current at tripping? This appears in the Event log in an event of a trip out.
How to design the earth grid for lightning protection in an industry
FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?
What are the basic & Majour problems in UPS ?
Define maximum demand?
Difference between ac parallel circuit and ac series circuit?
