Related Questions

Transformers with a capacity of up to _____ have a cooling radiator system with natural cooling
A 2 MVA
B 5 MVA
C 7.5 MVA
D 10 MVA
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)?
A 8
B 8.50
C 9
D None of these
Natural gas recovered along with crude oil from oil wells is called wet natural gas which has a higher __________ compared to the dry natural gas.
A Unsaturated hydrocarbon content
B Calorific value
C Quantity of propane
D Quantity of butane
Natural air cooling is generally restricted for transformers up to
A 1.5 MVA
B 5 MVA
C 15 MVA
D 50 MVA
Two transformers are connected in parallel. These transformers do not have equal percentage impedance. This is likely to result in
A short-circuiting of the secondaries
B power factor of one of the transformers is leading while that of the other lagging
C transformers having higher copper losses will have negligible core losses
D loading of the transformers not in proportion to their kVA ratings
Power transformers have rating
A equal to 50 kVA
B equal to 100 kVA
C above 200 kVA
D none of the above
In this method of underwriting, the underwriter gives rating points for all the negative or adverse factors, totals them and decides extra mortality rating. Which method are we talking about?
A Biometric rating
B Judgmental rating
C Clinical rating
D Numerical rating
Type of rating to which all credit rating agencies does not consider is classified as
A split rating
B sinking rating
C automated rating
D floating rating
Multiple inlet system of air cooling of turbo-alternators can be used for machines of rating upto
A 10 MW
B 30 MW
C 60 MW
D 150 MW
Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to:
A The heating effect of current alone
B Hysteresis loss alone
C Both the heating effect of current and hysteresis loss
D Intense sunlight at noon

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