Related Questions

Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to:
After the increase of price of oil by 40%, a family decided to reduce its oil consumption so that the expenditure for oil goes up by 26% only. If the total consumption of oil before the price rise was 10 kg per month, then what is the current consumption of oil per month (in kg)?
Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent.
In the blast furnace, incorporation of water vapour in the blast gives the following effect.
Two transformers are connected in parallel. These transformers do not have equal percentage impedance. This is likely to result in
The forced oil and air circulation method is usual one for transformers of capacities
Of the 65 cars on a car lot, 45 have air conditioning, 30 have power windows, and 12 have both air conditioning and power windows. how many of the cars on the lot have neither air conditioning nor power windows?
Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan
Natural oil cooling is used for transformers up to a rating of
Drum X is 1/2 full of oil and drum Y, which has twice the capacity of drum X, is 2/3 full of oil. If all of the oil in drum X is poured into drum Y, then drum Y will be filled to what fraction of its capacity?