
Three Phase System Quiz
Authored by MARSHAL GREYNER
Engineering
University
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main advantage of a three-phase system over a single-phase system?
Lower installation cost
Less maintenance required
Higher power transmission efficiency
Simpler wiring
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a three-phase system, how many degrees apart are the phases?
90 degrees
120 degrees
180 degrees
360 degrees
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What color is typically used for the neutral wire in a single-phase supply?
Yellow
Red
Black
Blue
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which connection type is characterized by a common connection point joining one side of each source?
Star/Wye Connection
Delta Connection
Parallel Connection
Single Phase Connection
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the phase voltage in a star-connected system compared to line voltage?
Half of line voltage
Twice the line voltage
Root three times line voltage
Equal to line voltage
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a characteristic of a delta-connected system?
Used for long-distance transmission
Line voltage equals phase voltage
Constant phase voltage regardless of load
Lack of a neutral wire
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the power in a three-phase system when one phase fails?
Power remains constant
Power is halved
Power increases
Power is completely lost
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