
Star and Delta Configurations
Passage
•
Science
•
12th Grade
•
Practice Problem
•
Hard
Standards-aligned
Wayground Content
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What produces an alternating current in a three-phase system?
Rotating a coil in a magnetic field
A constant magnetic field
A single-phase power supply
Direct current
Tags
NGSS.HS-PS2-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many degrees out of phase are the currents in a three-phase system?
180°
120°
360°
90°
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between line voltage and phase voltage in a star connection?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a delta connection, how does the line current compare to the phase current?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the phase voltage of a star connected transformer with a line voltage of 520 volts?
260 volts
900 volts
520 volts
300 volts
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the phase current in a delta connected load with a line current of 13.86 amps?
8 amps
13.86 amps
4.62 amps
20.79 amps
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the neutral current calculated in an unbalanced three-phase system?
By summing the phase currents
By using a specific formula involving the square and product of phase currents
By using a phasor diagram
By subtracting the highest phase current from the total
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