Answer / raj

Highly refined mineral oil

Answer / ramarao

Mineral insulating oil / askarel

Answer / viplav

Polychlorinated Biphenyl (PCB)

Answer / deepesh

ASKARAL and also known as mineral oil

Answer / muhammad shahzad

Natural mineral oil is use its trade name is ASKAREL but now
a day commercially use oil in transformer is PYROCLOR.

Answer / hitesh

Include askarals

Answer / chandan singh

Highly treated Napthalene Petroleum Oil

Answer / lalit bidhuri

Synthetic oil

In dc motor starter there is less voltage required for holding contactor that's may why it is called no volt coil. but in ac starter why holding contactor is called no volt coil.

2 Answers   JSW,

How to covert the ac to dc and how to control the dc output?

3 Answers   ABB,

why Y CONNECTION IS BETTER INTERMS OF EFFICIENCY AND P.F FOR A LAOD LESS THAN 40% AND WHY AFTER DELTA IS BETTER FOR > 40%

0 Answers  

Why voltage regulation of an alternator is negative for a leading power factor?

3 Answers  

What is the basic difference of turn ratio & transformation ratio for a transformer?

8 Answers   IGT,

What is the difference between circuit and network.

15 Answers   Jadavpur University, Sail, TCS,

Why transformer rating in kVA not in kW?

5 Answers   ABB,

How to calculate amount of copper used in a motor (AC&DC), generator and transformer? Datasheet provides power rating and mass of the equipment....can we somehow use this available info.

1 Answers  

what is post close & pre close of trip circuit supervision relay in circuit breaker control scheme?

2 Answers   ABB, NEK, Power,

why root three is used and how its comes in three phase power system?

1 Answers   IEEE,

what happens if the phase sequence of parrlel connected sys will changed & phase displacement

1 Answers  

we are operationing 3NOs 800 Kva generators by singronyus.specialey evening time our panel trip. the panel showing generator earth fault

4 Answers   RRB,