Why rotating machines are not allowed to run near critical speed region?

2 Answers  

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Show Details FROM:Muhammed Ikram TO:qa@allinterview.com Message flagged Saturday, June 4, 2011 10:07 PMMessage bodyHello all, i want to ask a question to all of you that what is VMM (voltage monitoring module )? how it work,s? i heard somewhere that it compare 1 phase voltage to other phase voltage. but there is also some setting on it. how to set it,s setting. please tell me briefly. Thank,s and Regard,s. Muhammed Ikram.

0 Answers  

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What's mean HVF & HAF in Vacuum Circuit Breaker?

0 Answers   Gandhi Institute of Technology and Management (GITAM), Hyundai, Jayam Engineering Works,

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what are the names and size of various conductors used in transmission lines

1 Answers   NTPC, Power Grid,

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why ELCB can't work if N input of ELCB do not connect to ground?

5 Answers  

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Explain the iniluencc of short circuit ratio on the pert'orniancc of synchronous machine.

0 Answers  

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What is the instrument to check the rotating diode fuse of alternator in running conditions?

0 Answers  

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when the motor was star position that is running ok but when the motor was delta it was tripped? why?

5 Answers   Nimbus, SEL Manufacturing,

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A 1F capacitor is charged to 100V initially. A 1H inductor is connected accros the capacitor througha a switch. The current in the circiut when the switch is closed is____

0 Answers   Ecil, L&T,

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any application of back emf

0 Answers   MahaGenco,

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What is the normal phase difference between the voltage and the no-load current in a transformer?

0 Answers  

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if a motor has 1500rpm then what will its HP?

3 Answers   Willdale,

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