DIFFERENTIAL RELAY

DIFFERENTIAL RELAY

University

6 Qs

quiz-placeholder

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DIFFERENTIAL RELAY

DIFFERENTIAL RELAY

Assessment

Quiz

Special Education

University

Hard

Created by

kalaivani c

Used 1+ times

FREE Resource

6 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is the basic function of a differential relay?
A. To detect the fault in the system
B. To monitor the voltage levels in the system
C. To monitor the current flowing through the system
D. To regulate the frequency of the system

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Why is a differential relay used in power system protection?
A. To protect against overvoltage conditions
B. To protect against overcurrent conditions
C. To protect against earth fault conditions
D. To protect against internal fault conditions

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which of the following is a typical application of differential relays?
A. Protection of transmission lines
B. Protection of generators
C. Protection of motors
D. Protection of transformers

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

A differential relay can detect which type of fault in a power system?
A. External faults
B. Internal faults
C. Overvoltage faults
D. Underfrequency faults

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an advantage of using a differential relay over other types of relays?
A. Provides faster tripping times
B. Requires less maintenance
C. Has a lower cost
D. Is less susceptible to false trips

6.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Design a differential relay scheme for protecting a transformer with a rating of 50 MVA, 132 kV/11 kV, with a ratio of 2:1, against internal faults. What are the CT ratios required for the scheme?
A. 2000/5 A for primary and secondary CTs
B. 500/1 A for primary and secondary CTs
C. 400/1 A for primary and secondary CTs
D. 800/1 A for primary and secondary CTs