What is Goerges phenomina to start SYCHNOUSMOTOR?
Answer / siva
The Goerges phenomenon is the operation of a 3-phase wound-
rotor induction motor at half of synchronous speedand it is
obtained by unbalancing the rotor circuit. If the motor is
started with one rotor phase opened or with rotor
impedances greatly unbalanced, it will accelerate to half
speed and operate stably as a motor or generator.The motor
may be operated stably at half or full speed. The torque at
half speed is greater than at full speed, and may be almost
as great as the rated torque for a balanced rotor. It may
be desirable to operate an induction motor at half speed
intermittently or as a temporary measure. Disadvantages of
half speed operation are the low power factor, low pull-out
torque, the subfrequency line currents, and motor
vibrations.
Is This Answer Correct ? | 2 Yes | 0 No |
Where servomechanism is used?
what is power factor when in view of a lineman
what is the value of combined earthing in general electrical circiut?
0 Answers Cathtect Engineering,
Can anybody explain me the electrical circuit of indian railways to drive electrical engines(LOCOMOTIVES)? How does overhead lines work in the circuit to drive different trains on the same track?
What is burden of a current transformer. What is function of core in Transformer
1 Answers Jindal Steel and Power, NCC,
I am having a DG set.The 415 V from Generator is step up to 460 v and then the same is used for Induction furnace. before Step up, I am connecting LT load to my factory use. When Induction furnace is in service from DG, when i try to start a motor, the generator is tripped.Please tell me the reason.
what take 100 w take current
what is let through energy of mccb
in a silicon diode we can measure .7v in a voltmeter.but why we can't use this voltage for using?
What is the importance of Form B to state Electricity Boards?
what is units of resistance
WHAT IS DOL STARTER? HOW IT WORK? GIVE ITS CONTROL AND POWER DIAGRAM .