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ELECTRICAL MACHINES

Electrical Machines
A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is

 1/√3
 √3
 3
 1/3

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Electrical Machines
Two transformers operating in parallel will share the load depending on their

 ratings
 per unit impedance
 efficiency
 leakage reactance

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Electrical Machines
A 100/10, 50 VA double winding transformer is converted to 100/110 V auto transformer. The rating of auto transformer is

 100 VA
 550 VA
 500 VA
 110 VA

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Electrical Machines
Tappings of a transformer are provided

 at the phase end of hv side
 at the phase end of lv side
 at the neutral side end of hv side
 at the middle of hv side

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Electrical Machines
In an auto-transformer, power is transferred through

None of these
 both A and B.
 induction process only.
 conduction process only.

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