Answer / abbas krishnagiri

RMS= root mean square value = Im/root2
average value= 2Im/py

I want to apply for ONGC recruitment 2012 .I am BE Electrical but it is mentioned that to apply for this post you have to have Electrical supervisor certificate .so please tell me from where can i get such certificate ???

1 Answers  

---

Name the test signals used in control system

0 Answers  

---

what is differnce btwen lll and lllg faults

0 Answers  

---

explain the working principal of the circuit breaker?

5 Answers  

---

what is the difference between "ampere trip and ampere frame"

1 Answers  

---

Why in india freq. is 50HZ & in U.S.A. it is 60HZ?

2 Answers   MacLellan,

---

Ceiling fan motor wiring Hi, I have 2 ceiling fans broken. The receiver/control units burned out due to lightening. One Harbor Breeze and one Hunter's I took them apart (remove receiver units). Now on both of the motor I see 4 wires coming out from each motor I really want to know the function of each wire. Are there anyway I can test to see which is which? After searching forums I know these 4 wires are from 2 sets of coils inside the motor, one is Start winding and the other is Runing winding I could not find the receiver/control unit any where, so I am planing to buy Capacitors and universal remote controls to make the fans run again. Anyone has any idea how to do the wiring, please help Thnks

1 Answers  

---

Why are the laminations insulated from each other?

0 Answers  

---

1)Why potential transformer primary site grounded? 2)can be loop between neutral & body for grounding? 3)What is the difference between ELCB &RCCB? 4)Why we use iron core in transformer insted of wooden core? 5)what is the principle of excitation? 6)Why we test the core balance test for transformer? 7)what is creepage?What is the creepage length for insulators at different voltages? 8)How much type of relays used for differential protection of generator,transformer & busbar protection?

5 Answers  

---

When the load on the system is zero and Capacitor bank is on condition, is capacitor bank takes any load?

2 Answers  

---

what is relation between torque and speed / rpm?

1 Answers  

---

What is mean A32 B32 C32 D32 in mcb(miniature circuit breaker)

2 Answers  

---