What does negative slip of an induction motor signify?
Answer Posted / gajendra patel
In case of induction motor rotor speed is always less then synchronous speed so its convert electrical to mechanical so its called motor and another case rotor.speed is more than synchronous speed then slip is negative (help of primemover) and thus its produced electricity so its called generator
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
How can I calculate the Mega watts required to run a plant having many electric motors and other electrical components.
i have 3500 amp load and select current transformer and perches.how i calculate .please understand
can we start slipring motor on star delta like we start induction motor ? if yes where will we connect ?
what maximum range of star & delta in hp or kw ?
In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?
hi Is there any possibilities to find out the rotation of a shaft or something else by using electromagnectic waves or by IR rays.If s then can v change the dir., of rotation of the same by remotely?& how? plz dn't any1 say "NO r CAN'T"
what is auto re-closer?
list the type of vfd? wich is sutable for heating kiln?
what is charger supervision and control supervision?
what is meant by twilight switches 7 where its applicable ?
how is working bearing heater?
what is the synchronous timer ? and it applications.
1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?
What are the advantages of skewing of cage rotor conductors?
kindly send me 11KV MV motor differential protection procedure by primary injection method.