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Q#1 DC Machines GATE EE 2012 MCQ +2 marks -0.66 marks

A 220V, 15kW, 1000rpm shunt motor with armature resistance of , has a rated line current of 68A and a rated field of 2.2A. The change in field flux required to obtain a speed of 1600 rpm while drawing a line current of 52.8 A and a field current of 1.8A is a

18.18% increase

18.18% decrease

36.36% increase

36.36% decrease

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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