Answer / k.prakashchandra

This test is for life evaluation / extension programme.The
dissipation factor (tan delta) represents the gross defects
and overall dielectric loss in the insulation.The first test
may be conducted after 10 years and subsequent tests may
conducted every 5 years , and if results are poor, after a
short period to watch the further deterioration

What value(high/low) of diversity factor is desired in power system and why? How such value is achieved?

1 Answers  

---

explain why core loss of a transformer is almost constant under different load conditions when connected across a constant voltage and constant frequency.

0 Answers   MPPGCL Madhya Pradesh Power Generating Company Ltd,

---

can transformer of different kvas be paralled

2 Answers  

---

While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply?

2 Answers  

---

why motor starting current is High ?

11 Answers   Bhel, Jindal,

---

What is the rating of HT SUBSTATION and LT SUBSTATION?

11 Answers   NTPC, Sail,

---

why capacitor is not discharged phase to body

1 Answers  

---

installation of subsatation of33kv

0 Answers  

---

what is electric traction?

26 Answers   TCS, Volvo,

---

why we take movement of rotor always in counter-clockwise direction in 3-phase induction motors?

0 Answers  

---

Air circuit breaker safety

0 Answers  

---

which is chemical used as in ro water what is difference betweeen multi grade filter&dual media filter

0 Answers   Dalkia,

---