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Q#1 Power System Protection GATE EE 1998 MCQ +2 marks -0.66 marks

The neutral of 10MVA, 11KV alternator is earthed through a resistance of 5 ohms. The earth fault relay is set to operate at 0.75A. The CT’s have a ratio of 1000:5.

What percentage of the alternator winding is protected?

85%

88.2%

15%

11.8%

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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