Digital Protection for Power System

Quiz
•
Other
•
University
•
Medium
Vishnu Perumal
Used 3+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
System short circuits may occur due to
Line to line contacts
Line to neutral contacts if neutral is not earthed
Line to neutral contacts if neutral is earthed
LL and LG faults
2.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Overcurrent protection devices are primarily designed to protect against which type of fault?
Open circuit faults
Insulation faults
Short circuit faults
Grounding faults
3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
What is the primary function of a relay in a power protection system?
To generate power
To regulate voltage
To detect faults and initiate corrective actions
To control frequency fluctuations
4.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
The fault clearing time of a breaker refers to:
The time it takes to detect a fault
The time it takes to isolate the faulty section from the rest of the system
The time it takes to repair the fault
The time it takes to restore power after a fault
5.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
In a pilot relaying scheme, what is used to communicate between relays?
Optical fibers
Power lines
Radio waves
Communication cables
6.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
What type of current transformer is used to measure phase currents in a power system?
Star-connected CT
Delta-connected CT
Bar-type CT
Summation CT
7.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
What is the purpose of a differential relay in a power system?
To regulate current flow
To measure power consumption
To detect and protect against internal faults
To control voltage fluctuations
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