Answer Posted / subhasish(rimo) sengupta

f=1/T. when,T = time period for one full cycle.
in T seconds, 1 revolution is completed.
So, in 1 second,1/T revolutions or f full waves is formed.

If there are P no. of poles,then P/2 no. of full waves will be formed in one full revolution of the field.
Now, if n=rotation of the field in 1 second,
then f=(P/2)*n
or,n=2f/p.
So, N=(60*2*f)/P , (when N= rotation per min.)
or, N=120f/P.

what is the calculation formula for motor starting torque,running torque, running torque.

1228

---

explain single phase series motor

1457

---

Please send 110 kv sb station full single line drawing(sld)

2060

---

how to select the no. of brushes in a lap winding?

1759

---

Which cable is use for rtcc control panel

1341

---

---

if a 3phase 100kva distribution transformer , 400 v,50 hz, 4-wire system is loaded at 160 k.w mostly 1-phase Lighting & Airconditioning split a.c load what will be the net effect on the power system in terms of voltage, powerfactor, current , efficiency of xformer

1472

---



1659

---

I am completed DEEE in tamilnadu, now i am working in andhrapradesh with 2.5 year experience in relavent field. capacity of the tranformer is 11KV, 1MVA Transformer, i am eligible for getting c licence in andhrapradesh pl help me.

1131

---

RESPECCTED SIR/MADAM- I AM PRERING FOR SECTION ENGINEER (ELECTRICAL) RRB CHANDIGARH PLEASE SEND ME SOME PREVIOUS YEAR QUESTION PAPER OR MODEL PAPER.MY EXAM IS ON (30- NOVEMBER 2008).I AM VERY THANKFUL TO YOU. FROM- HARENDRA SINGH YADAV

1620

---

If anyone would like to know or practice for FEWA papers contact me on mohamedrashad2@hotmail.com Just completed the supervisor exam in April 2021

729

---

What are n circles?

678

---

How to know of any cable size if there are not written on cabl?

1453

---

How out of step protection relay works?

1788

---

What is the difference between diesel generator engine with and without turbo charger with the same capacity?

1197

---

wish of these transformer uses oil?

1177

---