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Q#1 Power System Protection GATE EE 2007 MCQ +2 marks -0.66 marks

Consider the protection system shown in the figure below. The circuit breakers, numbered from 1 to 7 are of identical type. A single line 10 ground fault with zero fault impedance occurs at the midpoint of the line (at point F), but circuit breaker 4 fails to operate ("stuck breaker"). If the relays are coordinated correctly, a valid sequence of circuit breaker operations is

 

1, 2, 6, 7, 3, 5

1, 2, 5, 6, 7, 3

5, 6, 7, 3, 1, 2

5, 1, 2, 3, 6, 7

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Topic Questions Attempted Correct
Network Analysis 259 0 0
Signals and Systems 164 0 0
Control Systems 201 0 0
Analog Electronics 180 0 0
Digital Electronics 148 0 0
Electrical Machines 390 0 0
Power Electronics 237 0 0
Power Systems 343 0 0
EMFT EE 9 0 0
Measurement 152 0 0
Engineering Mathematics 225 0 0
General Aptitude 206 0 0