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Q#1 DC Machines GATE EE 1997 MCQ +2 marks -0.66 marks

A 5kW, 200V DC shunt motor has an armature resistance of 1 ohm and shunt field resistance of 100 ohms. At no-load, the motor draws 6A from a 200V supply and runs at 1000rpm. The rotational loss of the machine is… W and the no load torque is… N-m

Rotational loss = 784 W
No Load Torque = 7.486 N-m

Rotational loss = 884 W
No Load Torque = 7.486 N-m

Rotational loss = 784 W
No Load Torque = 8.486 N-m

Rotational loss = 684 W
No Load Torque = 6.486 N-m

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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