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Q#1 Power System Protection GATE EE 2014 NAT +2 marks -0 marks

The over current relays for the line protection and loads connected at the buses are shown in the figure.

 

The relays are IDMT in nature having the characteristic

The maximum and minimum fault current at bus B are 2000A and 500A respectively. Assuming the time multiplier setting and plug setting for relay  to be 0.1 and 5A respectively, the operating time of  (in seconds) is _______________.

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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