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Which of the above values shows the line voltage for a star connected load
A
B
C
D
Which of the following values would be the approximate value of line voltage for a delta connected load with a phase voltage of 900V
600V
519.6 V
1.56 kV
900V
A three phase delta connected load has a phase voltage of 230V what would be the approximate line voltage
230 V
400 V
133 V
240 V
In a star connected system what is the relationship between the line and phase voltage
V PHASE = V LINE x 1.732
V LINE = V PHASE x √3
V LINE = V PHASE/√3
V LINE = V PHASE
Which of the following values would be the approximate value of phase voltage for a delta connected load with a line voltage of 400V
693.2 V
231.2 V
692.8 V
Which of the above values shows the line current for a delta connected load
Which of the following values would be the approximate value of line current for a delta connected load with a phase current of 75A
34.7 A
60 A
129.90 A
104 A
Which of the following values would be the approximate value of line current for a delta connected load with a phase current of 60A
103.92 A
130 A
60.21 A
Which of the below values shows the phase voltage for a star connected load
Which of the above values shows the phase current for a delta connected load
Why is it important to balance three phase loads as evenly as possible across the three phases
to reduce the neutral current
to improve the power factor
to reduce the voltage
to reduce disconnection times
Which of the following would not require a neutral connection
single phase load
three phase unbalanced loads
three phase balanced loads
T.T system
Which of the following values is the approximate neutral current for a balanced star connected load drawing 12 A per phase
20.78 A
36 A
0 A
12 A
Which of the following values would be the approximate value of line current for a star connected load with a phase current of 110 A
75 A
110 A
43.3 A
Which of the following values would be the approximate value of phase current for a star connected load with a line current of 90 A
155.9 A
90 A
51.96 A
30 A
Which of the above meters shows the line voltage for a star connected load
1
2
3
4
Which of the above meters shows the phase voltage for a star connected load
Which of the above meters shows the phase current for a star connected load
none of the above
What is the approximate value of line current for the delta system shown?
20A
6.7A
11.5A
34.6A
What is the approximate value of phase current for the delta system shown?
Which of the following is the phase voltage for the star system shown
60V
11.55V
34.64V
20V
What is the approximate value of phase voltage for the delta system shown
87V
230V
260V
150V
6.71A
11.54A
What formula would you use to calculate the Line voltage
VLINE = 230 + √3
VLINE = 230/√3
VLINE = 230
VLINE = √3 x 230
Three phase Star connected system provided with a neutral can be used for
The connection of three phase loads
The connection of delta loads
The connection of an earth
The connection of single phase loads
In a star connected system what is the relationship between the line and phase current
I LINE = I PHASE /√3
V = I x R
I LINE = I PHASE x 1.732
I LINE = I PHASE
From the following diagram what number represents the Line Current
From the following diagram if number 1 is 11kV what would the value number 3 be
19kV
6.35kA
6.35kV
11kV
From the diagram below, what does the number 4 represent
Phase Voltage
Phase Current
Line Voltage
Line Current