1
GATE EE 1997
Numerical
+2
-0
A $$3$$-phase transformer bank consists of three identical $$2300/230$$ $$V,$$ $$15$$ $$kVA$$ single-phase transformers connected in delta/delta. The bank supplies a $$20$$ $$kVA,$$ unity $$p.f.$$ $$3$$-phase load. If one of the single-phase transformer develops a fault, and is removed, the load carried by each of the two transformers now operating in open delta will be __________$$kVA.$$
Your input ____
2
GATE EE 1993
MCQ (Single Correct Answer)
+2
-0.6
A $$220/440$$ $$V,$$ $$50$$ $$Hz$$ single phase transformer operates on $$220$$ $$V,$$ $$40$$ $$Hz$$ supply with secondary winding. Then
A
the eddy current loss and hysteresis loss of the transformer decrease
B
the eddy current loss and hysteresis loss of the transformer increase
C
the hysteresis loss of the transformer increases while eddy current loss remains the same
D
the hysteresis loss remains the same whereas eddy current loss decreases
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