With a bank of two single phase transformers connected in V - V fashion supplying a balanced three phase load with Cos as power factor. The power factor of the two transformers is given by

With a bank of two single phase transformers connected in V - V fashio

1.	With a bank of two single phase transformers connected in V - V fashion supplying a balanced three phase load with Cos as power factor. The power factor of the two transformers is given by
A.	Cos , Cos
B.	Cos , Cos(30+ )
C.	Cos(30- ), Cos(30+ )
D.	Cos(30- ), Cos
Answer» D. Cos(30- ), Cos

Discussion

No Comment Found

Related MCQs

A 120 V shunt generator running at 850 rpm has its armature and shunt field resistance of 0.15 ohm and 50 ohm respectively. It supplies 200 lamps each rated at 60 W, 100 V. The friction and windageand core loss of the machine is 400 W. its armature copper loss on full load and shunt field loss is
In sumpner s test, the net voltage in the local circuit of secondary s is
If W1 is the input power measured by the wattmeter connected across the primaries and W2 is the measurement of wattmeter connected in secondary s while performing sumpner s test then iron losses and copper losses is equal to
While conducting the sumpner s test, the primaries of the two identical transformers are connected in parallel across the supply. The secondary s are connected in
While performing sumpner s test on transformer, if the secondary are not in series opposition then the meter will read
Split phase induction motors are available in the range of
For a two winding transformer if VA rating is given by (VA) and K is the transformation ratio of an autotransformer then the VA rating of the autotransformer is given by
If a two winding transformer is converted into an autotransformerby applying additive polarity and subtractive polarity which results in the secondary voltages of 1840 and 1810 volts. Then the primary and secondary voltages of transformer are
Small iron core transformers used in certain frequency range is also called audio frequency transformer. The audio frequency range is
A ferro reso t transformer regulation is also known as

With a bank of two single phase transformers connected in V - V fashion supplying a balanced three phase load with Cos as power factor. The power factor of the two transformers is given by

Discussion

No Comment Found

Related MCQs

Reply to Comment