STAR AND DELTA CONNECTION

Star connection is also known as____

• Y - Connection

• Mesh connection

• Loop connection

• All of the above

Delta connection is also known as_____

• Y - Connection

• Mesh connection

• Loop connection

• All of the above

For a star connected three phase AC circuit ———

• Phase voltage is equal to line voltage and phase current is three times the line current

• Phase voltage is square root three times line voltage and phase current is equal to line current

• Phase voltage is equal to line voltage and line current is equal to phase current

• None of the above

In a three phase, delta connection ——-

• line current is equal to phase current

• Line voltage is equal to phase voltage

• Line voltage and line current is zero

• None of the above

The potential difference between two lines is____

• Phase voltage

• Line voltage

The potential difference between line and neural is____

• Phase voltage

• Line voltage

The three-phase winding shown in figure have been connected in the:

• Delta configuration

• Double series configuration

• Parallel configuration

• Star configuration

One method of forming a three-phase system is to connect the dissimilar similar ends of the windings together. This type of connection is called a:

• parallel connection

• wye connection

• star connection

• Delta connection

The three-phase winding shown in figure have been connected in the:

• Delta connection

• double series configuration

• parallel configuration

• star configuration

A three-phase generating system has an efficiency of around:

• 96%

• 90%

• 66%

• 50%