How each of the following losses occur in d.c machines (i) copper (2)core (3) windage (4)friction please help me
1580Why does an induction generator is preffered as compared to synchronous generator in especially a wind energy power production project?
1594WHAT IS THE FAULT WHEN 100HP TURBINE MOTOR TRIPS, LIST THE FAULTS AND ITS TRABULESHOOTING TIPS.. MY AUTO TARNSFORMER STARTER TRIPS
1618what is the meaning of Ring Mean Unit in a substation or trasformer also tell me its oerpuse?
4 48007How can make a star delta with Rstar delta feeder ( ( 4contactor & one timer ) pls answer with digram (power &control digram)
1 3033write circuit diagram for a motor rotate in forward direction once it started and when pressed the same button it should rotate in anticlockwise.
2053what is mathed of check the D.C MOTOR 181 KW (ARMATURE AND FIELD) WHAT IS THE MATHED OF CHECK THE THYRISTOR MODULE (HIGH CURRENT)
1548Post New Electrical Engineering Questions
State The Difference Between Generator And Alternator?
What are the basic elements used for modeling mechanical rotational system?
what is ramping rate of generator
what is magnetizing and demagnetizing current in generator and motor?
What is star-delta transformer?
What is the basis for selecting Vk/2 or Vk/4 for REF and Differential protection of Transformer and What is the significance of magnetising current
Give idea about General Engineering. From which book i can study this topic. Pl. reply me via email. My email is ravi@bhelhwr.co.in, also give the name of book/website, from where i can prepare it.
What is 100% protection of generator? Why 100% is not used but 95% is generally used?
IF alternator SCR value will be high means what happen in alternator efficency at operating power factor of 0.8
how 650 volts creates? where is use?
Hi.. I am a BE GRaduate in E&E. I have 8.5 Experience in Tendering & Estimation field. I have done SAP SD course few years back. But due to some reason i failed to get job in that field and continued my own field. Now I am thinking of changing into SAP seriously. How should i go ahead???
i have some screw comprressor with 630kw power,i have established them with simple star to delta circuit,by the way there is so much inertia when the screw comprressors start, can you offer me contactors power with 400vac or any cataluge to choose the contactors
how to calculate the conductor size for certain KV transmission line and distribution line?
following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?
how to calculate compresor capacity?
