Answer / raj

relay are device which are use to sense fault .
and cntactor are device which reacived signal through relay
and remove contact from the line or connect the line
(manually)

Answer / sahilnabi

Relay is basically an electronic device which manufact because of sensing very small parameters of electricity.

In connectivity of the same contactor is made for basically for manual as well as automatic switching operation for secure the machine from several surges.

what is trip circuit supervision relay? How does it work in switchgear?

6 Answers   Radha Regent Hotels,

---

what is motor contrl center .

3 Answers  

---

what will happen if multimeter(selector switch at DC voltage) and terminal at current is connected to DC supply?

0 Answers  

---

How to decide CT & PT ratings for a given transmission line carrying some rated voltage?

0 Answers  

---

How we can find the regulation of transformer?

2 Answers  

---

Iam Preparing For Ap Transco Assistant Engineer (ELECTRICAL) Exam how To Prepare What Is The Refernce Books.can You Give The Advises To Me.tahnk You. This Is Radhika Iam Preparing For Ap Transco Assistant Engineer (ELECTRICAL

2 Answers  

---

what is MULTIPLYING FACTOR in substations??

2 Answers  

---

what is meant by transformer?

11 Answers  

---

What is the difference between voltages or potential difference? And what are they?

0 Answers  

---

what is meant by bus bar and outgoing/incoming breaker in an electrical/electronic circuit

3 Answers  

---

a induction motar has 30-35% exciting current at no load but in transformer it is only 2-3% ofbrated current why any reason?

1 Answers   century,

---

what is the generating transformer?

3 Answers  

---