Answer / deepesh giri sharma

Turbine has to rotate at a speed (Say 6000 rpm) but when due to some reasons like tripping of any equipment or turbine itself it.s speed goes down then turning gear engages with the turbine and rotate it at a speed (say 300-400 rpm) to avoid developing the thermal stress. There is clutch with turning/barring gear which automatically engages with turbine shaft and rotate it with the help of a motor.

Answer / hameedwahab

The role of turning gear in Steam Turbine: To rotate rotor in low speed for the following purposes:
1.To Warm Rotor uniformly before start up.
2.To Cool Rotor uniformly after shutdown.
3.To reduce the initial Torque during start up.

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Dear Sir, I am Shariq Sami. I joined BHEL as a Supervisor Trainee in May 2009 on diploma basis, right now i am an assistant Engineer and posted at Noida. I have completed my bachelor of engineering from Jamia Millia Islami, New Delhi.I am Planning to appear for "BHEL ET" exam this year. I want to know,is there any previous year question papers will be available like we have for GATE exams or you feel it is no need? Can you please guide me? Kind Ragards M.S Sami, Contact No. 9891090742, 9250250988, 0120-2545796

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