Electrical Engineering > GATE 2015 SET-2 > DC Machines
A 4-pole, separately excited, wave wound DC machine with negligible armature resistance is rated for 230 V and 5 kW at a speed of 1200 rpm. If the same armature coils are reconnected to form a lap winding, what is the rated voltage (in volts) and power (in kW) respectively at 1200 rpm of the reconnected machine if the field circuit is left unchanged?
Correct : b
Similar Questions
A 250 V de shunt motor has an armature resistance of 0.2 and a field resistance of 100 2. When the motor is operated on no-load at rated voltage, it draws an a...
A DC shunt generator delivers 45 A at a terminal voltage of 220 V. The armature and the shunt field resistances are 0.01 Ω and 44 Ω respectively. The stray loss...
A separately excited DC generator has an armature resistance of 0.1Ω and negligible armature inductance. At rated field current and rated rotor speed, its open-...
Total Unique Visitors
Loading......