Answer / barkha thakur

dirrential relay is a type of directional relay
it operates when there is a difference in the primary &
secondary current

Answer / biju mathew

Differential relay is a relay which operates when there is
a difference between two currents. For example incoming and
outgoing currents in a circuit.

Answer / sanjayjssate

Diffrential relay is used in transformer winding protection, it calculates the current of secondary side with transformer turn ration, if the current on other side is very slightly diffrent it does not trip but when iy crosses a fixed percent of defined protection it trips the circuit.

Q. calculate the value of the resistor to be connected in series with a 100W; 230V lamp so that the wattage of the lamp is reduced to 35W

8 Answers  

---

When steam condenses and becomes water at the same temperature, the specific heat for the process in kJ/kg k is

0 Answers   Caterpillar,

---

Which motor isused in indian railway system?

3 Answers  

---

Why the generating station rating is in KW though the rating of generators in KVA?

8 Answers   HAL,

---

what is effect of unbalaced load -- say R 15A, Y 25A, B 10A

4 Answers   TransWorks,

---

---

if the number of poles generated in stator and rotor side of an induction motor are different then what will happen and why?

0 Answers  

---

what is priming pump?why it is used ?

2 Answers  

---

What will be in Mahagenco Trade Test Exam? I want to know the same.

0 Answers   MahaGenco,

---

How to calculate the TR (AC's)

4 Answers  

---

how electrical earthing maintenance done in industry?

0 Answers   L&T,

---

Is it possible to interlock between ACB & MCCB?

2 Answers   Areva,

---

why we are not earthing ht cable at both the ends(sending & receiving end)?

5 Answers   Essar,

---