Answer Posted / thunder bird

AC voltages are sinusoidal in propagation. the electrical machines are designed for root mean square(RMS) values of voltage which is nothing but equivalent D.C voltage.whereas insulation, transmission etc are calculated for average(AVG) values which is 1.1 times RMS value.1.1 is form factor for sinusoidal waves. (form factor = RMS value/ AVG value). so a generator may be producing 400 kV RMS but in common mans' term it will be 440kV.

Two liquids hot and cold in two vessels are there and an metal bar acts as a conductor of heat between the two vessels. what happens then. what happens after 24 hrs?

2209

---

3Cx240 & 3Cx300 sqmm Al. cable from lv side. What is the calculation for this cable??

1410

---

Hello Guys !! i want to rrb section engineer electrical(signal) previous model papers? any body help me?

1907

---

Why different Pressure switch used in marine boiler water circulation system

1766

---

What is the name of transformers oil filteration equipment?

2091

---

what is difference between earthingpits,earthing grid & earthing mess?

2515

---

What is the effect on power factor, shown by a trivector meter; incase of reverse phase sequence. If the power factor of a system is lag what meter will show in case of reverse phase sequence connected to the meter. and What in case of lead.

2320

---

Did RMU have ct and pt ?

1360

---

What are the components of feedback control system?

1093

---

How to determine the breaking capacity such as break down current and break down voltage for VCB and CT's.

2199

---

sir am giving jspl exam on 19th oct . i belong to eee, so plz send previous question papers ..........to dis id abhilash203@gmail.com

2573

---

what are the basic insulation levels & what its Unit

2022

---

Why neutral is not used in three phases dol starter

1954

---

What are the two segments of nyquist contour.

1112

---

What is an ac motor?

1277

---