If an induction motor is restarted before its rotor stop
rotating, then what will be the amount of current drawn?
Is this current will be the same as motor starting current?
Answer Posted / lova subrahmanyam
in induction motor starting current is 3 times more than the
full load current at the time of starting.why because the
rotor is in stand still condition,(ie back emf of rotor is
'0').that's why to induce the emf in the rotor it takes more
current to produce the torque.onece the motor reaches the
rated speed it will take normal load current.if u cut off
the suupply
| Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
HOW TO CALCULATE EARTHING SIZING?
what are the advantages disadvantages of connecting high voltage block( 1:1 transformers) transformers between the turbo generators and busbars.
sir,in our plant we r using SATEC PM172E power reading meeters in HT panel side it is monitoring the MB data smart viewer(sever).but last one week we did not get readings inthe server only available in meeter.tell me how communicate meter and server. and also what steps we take for checking.
What is star-delta transformer?
formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?
how the testing of protection CT Testing done through Primary injection kit please describe in detail procedure...
1.What is captive power plant? 2.What is national grid?Give brief idea.
What are the main advantages of bode plot?
Suppose a 3 phase, 2 pole, 440V induction motor is driving a flywheel of 600mm diameter, 150kg mass. By using v-belt and pulley, the speed is increased to 4500 RPM. What will be the effect on motor current?
How much costly in percentage wise is sandwich busduct costly than air insulated busduct of any rating?
What is the use of iron core in a transformer?
What is a dc motor?
What is the difference between hot and cold loop testing?
What is the need for a controller?
what is auto re-closer?