Answer Posted / rupali

EARTH LEAKAGE CIRCUIT BREAKER WORKS IF IT GETS ANY CURRENTS
ACROSS EARTHING & IT DETECTS CURRENT THROUGH THIS OPERATION:
WE KNOW THE VECTOR SUM OF THREE PHASES IS EQUAL TO NEUTRAL &
EQUALS TO ZERO.IF EARTH DETECTS ANY CURRENTS THEN THROUGH
NEUTRAL FLOWS SOME AMOUNT OF CURRENT AND THE ELCB TRIPS OUT.

Explain Energy and Power signals?

1779

---

Explain what are inter-poles and why they are required in a dc machine.

1098

---

State the points to be considered for selecting a particular type wiring.

2077

---

How does "OUT OF STEP" relay ,for Synchronous motor protection, work?

4350

---

what is power factor ? how we can calculate the low power factor and amount of capacitor for improve that low factor ?

1627

---

What is mean by STUB protection?

2071

---

What is lifting power for 1 wb/m2 and 1 A magnet?

2230

---

What is nichols chart?

1338

---

what is apparent poewr, reactive power, & active power?

2349

---

I have a relay contact rated at 220v dc which is supplied with a 24vdc from the panel,for it to trip the dampers(24vdc).What if the application of the relay changes so that it should work at its rated 220vdc then will it work at 24vdc supply given or any other consideration needs to be taken .....

2099

---

what is the safety points of vaccum circuit breaker.

2094

---

What do you mean by distribution transformers?

1168

---

A 100KVA SINGLE PHASE TRANSFORMER 10000/200V,50HZ REQUIRES 300V AT HV SIDE TO CIRCULATE FULL LOAD CURRENT WITH LV SHORT CIRCUITED.THE INTAKE IS 1000W.THE % OF REGULATION ON FULL LOAD AT 0.8 PF LAGGING WILL BE HOW MUCH AND THE SECONDARY TERMINAL VOLTAGE ON 0.8 PF LEADING WILL BE

2587

---

what is the calculation involved to design the heater to heat 10KL of water in temperature control unit?

1939

---

how we can come to know that motor winding resistance which showing by DMM is right or wrong???is there any chart or something that we will compare & check???

1919

---