Answer Posted / dinesh
the difference between the synchronous speed of the stator
and rotating speed of the rotor is called slip
S =Ns-Nr/Ns
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What are n circles?
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?
Use of switch mode power converter in real-time basis?
why +24 v and -48 v give to BTS? If -48v protect from surge then why we not use -24 v?
Why the magneti fields are not passes from southpole to north pole
While testing LA mast,What are the parameter limits ?
sir, i am 3 years diploma course pass out candidate.what type of certificate can i got in marine service.
How to calculate LT XLPE CABLE for 11 kv / 433 v , 1000 kva oil type transformer system?
In case of HV test on medium voltage cables, BS is asking for 4 U0 where as IEC is asking for 3.5 U0. Can any one advise me how this 3.5 times or 4 times U0 is derived?
An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The slip when motor stalls is A 1 B 0 C 13.33% D 10.33%
What happened when voltage will half value of current ...
How do we arrive at selecting reactive capacitance value as 30% of h.p rating of motor?
The simple way of finding the leakage quantity and % in compressed air distribution system
How to check the cable fault / hv test of transformer cable.
The Q-facr o of a coil given as wL/R. what will be shape of Q versus frequency graph.