
Electrical Engineering Principles Part 1
Authored by Andrew Harrison
Education
Professional Development
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6 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Figure 1 shows the phasor diagram for a reactive circuit which operates at 200 Hz.
Determine the following:
a) Supply voltage Vs using the formula Vs = √ V1² + V2²
270.3V
360.6
342.5
380.2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Figure 1 shows the phasor diagram for a reactive circuit which operates at 200 Hz.
Determine the following:
a) Phase angle using the formula sin-1 V1/Vs
33.7 degrees
36 degrees
34.2 degress
38.2 degrees
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Figure 1 shows the phasor diagram for a reactive circuit which operates at 200 Hz.
Determine the following:
a) Power factor using the formula, cos 𝝓
0.86
0.36
0.83
0.68
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Figure 1 shows the phasor diagram for a reactive circuit which operates at 200 Hz.
Determine the following:
a) Power dissipated using the formula Power = VI
9 kW
5kW
4 kW
3 kW
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Figure 1 shows the phasor diagram for a reactive circuit which operates at 200 Hz.
Determine the following:
a) Reactive Power using the formula VA (Volt-Amperes)
9 kVA
2 kVA
4 kVA
3 kVA
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Power Factor can be described as…
The cosine of the angle between useful power and total.
Power = cos ø.
Useful power (kW) divided by the total power (kVA)
Real power (P) / apparent power (S).
All of these
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