Have an account?
Skip to Content
Build your own quiz
Suggestions for you
5 questions
Show Answers
See Preview
- 1. Multiple Choice
Which one is the more common mode of fault in a power system?
Three phase bolted to ground
Phase to phase
Three phase bolted
Phase to phase to ground
- 2. Multiple Choice
Which is one the ways of calculating fault current?
F=ma
V=IR
E=mc2
IF=MVA/sqrt(kV)
- 3. Multiple Choice
Which statement is NOT correct?
Sequence Impedance simplifies the asymmetrical fault calculations
Positive sequence current flows in the path of positive sequence impedance
Zero sequence impedance influences magnitude of zero sequence current
Positive, negative and zero sequence current have equal magnitude and displaced 120deg each other
- 4. Multiple Choice
As fault current cannot be avoided, the following approaches are taken to reduce its effect, EXCEPT:
Confine the fault into as small as possible area
Cutting danger trees
Managing the fault current phase angle
Managing the fault current magnitude
- 5. Multiple Choice
What is the typical standard for calculating fault current?
IEC 60990
IEC 60909
IEC 61009
IEC 69100
- Answer choicesTagsAnswer choicesTags