Answer / sukhvinder

1. ONAN (oil natural,air natural)
2. ONAF (oil natural,air forced)
3. OFAF (oil forced,air forced)
4. ODWF (oil direct,water forced)
5. OFAN (oil forced,air forced)

Answer / mark

ONAN
Oil Natural Convection, Air Natural Convection

ONAF
Oil Natural Convection, Air Forced Circulation

ONAN/ONAF/ONAF
Oil Natural Convection, Air Natural Convection
Oil Natural Convection, Air Forced Circulation
Oil Natural Convection, Air Forced Circulation

ONAN/ONAF/OFAF
Oil Natural Convection, Air Natural Convection
Oil Natural Convection, Air Forced Circulation
Oil Forced Circulation, Air Forced Circulation

ONAN/ODAF
Oil Natural Convection, Air Natural Convection
Oil Directed Circulation, Air Forced Circulation

ONAN/ODAF/ODAF
Oil Natural Convection, Air Natural Convection
Oil Directed Circulation, Air Forced Circulation
Oil Directed Circulation, Air Forced Circulation

OFAF
Oil Forced Circulation, Air Forced Circulation

OFWF
Oil Forced Circulation, Water Forced Circulation

ODAF
Oil Directed Circulation, Air Forced Circulation

ODWF
Oil Directed Circulation, Water Forced Circulation

ODAF/ODAF
Oil Directed Circulation, Air Forced Circulation
Oil Directed Circulation, Air Forced Circulation

Answer / abdulla kunhi

1. ONAN (oil natural,air natural)
2. ONAF (oil natural,air forced)
3. OFAF (oil forced,air forced)
4. OFWF (oil forced,water forced)
5. ODAF (oil directed,air forced)
6. ODWF (oil directed water forced)

Answer / salai bawi ding

1.NAN (Natural Oil,Natural Air) Cooling
2.ONAF (Natural Oil,Force Air) Cooling
3.OFAF (Force Oil,Force Air) Cooling
4.OFWF (Force Oil,Force Water) Cooling
5.ODAF (Direct Oil,Force Air) Cooling
6.ODWF (Direct Oil,Force Water) Cooling
7.OFAN (Force Oil, Natural Air) Cooling

Answer / tanmoy

in transformer cooling system there is two type of cooling
system is used
1:-natural
2:-forced
and three type of cooling materials is used
1:-air
2:-oil
3:-water
cooling arrangement
1-air natural
2-oil natural
3-water natural
4-air forced
5-oil forced
6-water forced
7-air natural oil forced
8-oil natural air forced
9-oil forced air forced
10-oil natural air natural
11-air natural water natural
12-air forced water forced
13-air natural water forced
14-air forced water natural
15-oil natural water natural
16-oil forced water forced
17-oil natural water forced
18-oil forced water natural

Answer / rajib chakraborty

1. ONAN (oil natural,air natural)
2. ONAF (oil natural,air forced)
3. OFAF (oil forced,air forced)
4. ODWF (oil direct,water forced)
5. OFAN (oil forced,air forced)
6. AN (air natural)

Answer / krishna chaitanya

genarelly transformers cooling purpose its depend on
transformer capacity general useing air cooling oilcooling
and heavy transformers also useing waterforced air cooling

Answer / bhavin soni

2 type

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