In a transformer, the hysteresis and eddy current losses
depend upon
1.load current
2.maximum flux density in core
3.type of lamination
4.supply frequency
The correct statements are
(a) 1 and 3 (b) 2 and 3
(c) 1 and 4 (d) 2 and 4
Answer Posted / raja
2
Is This Answer Correct ? | 0 Yes | 3 No |
Post New Answer View All Answers
why we use ac supply as 415 volts instead of 415 v why we cant apply 230 v for dc
what are the applications of transistors with low dc gain, high dc gain and medium dc gain( beta)?
Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.
how a flip flop can be used as a latch?
what is the role and fuction of automatic transfer switch in rotary ups
What is a system?
where was current transformer protection units used and why??
what is the difference between skin effect
What information we need to prepare relay coordination chart
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???
Explain what is rated speed?
Why is negative feedback invariably preferred in closed loop system?
Can anybody please refer the best and simple book for about Protection relays and in detail of all its protection ?
why impedance relay is used for medium transmission line protection
What is systematic error?