Three-phase system and generator connections

Three-phase system and generator connections

11th Grade

10 Qs

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Three-phase system and generator connections

Three-phase system and generator connections

Assessment

Quiz

Engineering

11th Grade

Practice Problem

Hard

Created by

Zoli B

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main advantage of three-phase systems over single-phase systems?

Lower voltage

Better energy efficiency and stability

Higher phase number

Higher load capacity

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In which connection will the phase voltage be lower than the line voltage?

Delta connection

Star connection

Network connection

Closed-loop connection

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the phase shift characteristic in a three-phase system?

90°

120°

180°

360°

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which system requires higher voltage insulation between the coils?

Star connection

Delta connection

Both systems require the same

Neither

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens in a three-phase system when the three phases operate under balanced load?

Current flows through the neutral conductor

No current in the neutral conductor

All phases synchronize

Line voltage decreases

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the relationship between phase voltage and line voltage in a star-connected system?

U_line = U_phase

U_line = √2 * U_phase

U_line = √3 * U_phase

U_line = 2 * U_phase

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In which generator connection is a three-phase alternating current generator required?

Star connection

Delta connection

Both

Single-phase generator connection

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