Answer Posted / m.kumaran

while the motor runs from rest position the resistance of winding is very low so the motor gets more current.it will damage the motor winding so aviod this we use some starters for limiting the starting current.

What is the difference between Generator Differential Relay and Transformer Differential Relay?

2275

---

please send me the L&T Emb. sys. placement papers and entire details of pattren

2335

---

What is the normal phase difference between the voltage and the no-load current in a transformer?

1259

---

Don't you have similar question banks related to Oral Certification Examination conducted by Mercantile Marine Departments / Directorate of Shipping, Ministry of Shipping for Electro Technical Officer?

1678

---

how to calculate the distance relay faulty zone?pls explain?

2048

---

Purpose of providing neutral isolation panel for parallel operation of diesel generator

1782

---

A 3-PHASE TRANSFORMER IS USED TO STEP-DOWN THE VOLTAGE OF A 3-PHASE, 11KV FEEDER LINE. PER-PHASE TURNS RATIO IS 12.FOR A PRIMARY LINE CURRENT OF 20A, CALCULATE THE SECOUNDRY LINE VOLTAGE, LINE CURRENT AND OUTPUT KVA FOR FOLLOWING.A)STAR- DELTA.B)DELTA-DELTA.

3061

---

Define coil span?

1082

---

how to calulate short circuit current for the following: 1.cable connecting 11KV of 22KV/11KV transformer to 11Kv of 11KV/415V transformer 2.what cable size should i use.

2152

---

what is transient stability analysis means?

2147

---

Is vtg is controlled by the resistor? if else how much?

2089

---

What is the power factor of a transformer at no load?

1106

---

by using pump duty, how we will can calculate the motor duty(KW)? is there any standard or formula.

1978

---

What is speed mode?

1718

---

What is difference between mcb and mccb.

1151

---