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Distribution transformers are generally designed for maximum efficiency around________________?
Related MCQs
The value of flux involved m the e.m.f. equation of a transformer is__________?
The main reason for generation of harmonics in a transformer could be__________?
Gas is usually not liberated due to dissociation of transformer oil unless the oil temperature exceeds?
The full-load copper loss of a trans¬former is 1600 W. At half-load, the copper loss will be__________?
A Buchholz relay can be installed on__________?
A transformer oil must be free from__________?
The core used in high frequency transformer is usually__________?
In a transformer the resistance between its primary and secondary is__________?
Harmonics in transformer result in__________?
Helical coils can be used on__________?
The function of conservator in a transformer is__________?
The thickness of laminations used in a transformer is usually__________?
Material used for construction of transformer core is usually__________?
Hysteresis loss in a transformer varies as CBmax = maximum flux density) ?
The noise resulting from vibrations of laminations set by magnetic forces, is termed as__________?
The transformer ratings are usually expressed in terms of__________?
An ideal transformer has infinite values of primary and secondary inductances. The statement is__________?
The chemical used in breather is__________?
The chemical used in breather for transformer should have the quality of__________?
The use of higher flux density in the transformer design__________?
In a transformer the tappings are generally provided on__________?
What will happen if the transformers working in parallel are not connected with regard to polarity ?
If the percentage impedances of the two transformers working in parallel are different, then__________?
If R2 is the resistance of secondary winding of the transformer and K is the transformation ratio then the equivalent secondary resistance referred to primary will be__________?
Two transformers operating in parallel will share the load depending upon their__________?
The power transformer is a constant__________?
The purpose of providing iron core in a step-up transformer is?
Greater the secondary leakage flux__________?
Spacers are provided between adjacent coils?
No-load current of a transformer has__________?
Transformer breaths in when__________?
The maximum efficiency of a distribution transformer is__________?
Power transformers are designed to have maximum efficiency at__________?
Natural oil cooling is used for transformers up to a rating of__________?
In the transformer the function of a conservator is to__________?
In a transformer routine efficiency depends upon__________?
The no load current in a transformer lags behind the applied voltage by an angle of about__________?
A common method of cooling a power transformer is__________?
In a given transformer for given applied voltage, losses which remain constant irrespective of load changes are__________?
Efficiency of a power transformer is of the order of__________?
Which winding in a transformer has more number of turns ?
Primary winding of a transformer__________?
A transformer cannot raise or lower the voltage of a D.C. supply because__________?
A transformer transforms__________?
In the transformer following winding has got more cross-sectional area__________?
While conducting short-circuit test on a transformer the following side is short circuited?
Which of the following is not a part of transformer installation ?
The purpose of providing an iron core in a transformer is to__________?
No-load current in a transformer__________?
The efficiency of a transformer will be maximum when__________?
The permissible flux density in case of cold rolled grain oriented steel is around__________?
Distribution transformers are generally designed for maximum efficiency around________________?
A. 90% load
B. zero load
C. 25% load
D. 50% load
Correct Answer:
50% load
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Last Updated:
June 28, 2018