Answer Posted / vikramsena_reddys

as per EMF equation of the trasformer frequency is directly
proportional to winding voltage. if we double the frequency
the sinusoidal root mean winf=ding voltage also doubled.

E=4.44 * f*b*n*a*b

WHAT ARE THE DATAS REQUIRED FOR PROTECTION AND METERING AND CONTROL AND LOGIC PREPARATION,HOW TO STUDY THE PROTECTION AND METERING?

2224

---

What happen if 200 KVAR capacitor connected to power continuesly?

2131

---

What is the emf equation of a transformer?

1269

---

What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

1349

---

Batteries. What is the difference between Lead and Nickel batteries ?

2219

---

Why the efficiency of generator is more than motor in swinburne's test

2034

---

how we will deside the high voltage value

1998

---

15hp motor wound by 0.9mm & 0.95mm magnet wire. at no load test it draw 4.2A current. Another motor with same condition draw 9.2A current. How can that occur? pls help

1585

---

Starting Time of LT & HT Motor

1961

---

how much value of resistance should connect to 15 kw, 6 pole 3 phase slip ring induction motor having RV-240, RA-42.

1925

---

Can any body tell me the different types of LT cables & their application.

2120

---

What is reverse power relay?

1196

---

if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?

1942

---

What the difference between three phase contactor (coil 110vac) & three phase SSR (control voltage 110Vac)? May I use contactor in place of SSR?

2176

---

How to Preparation of online test

1707

---