Electrical Engineering > GATE 2023 > DC Motors
A separately excited DC motor rated 400 V, 15 A, 1500 RPM drives a constant torque load at rated speed operating from 400 V DC supply drawing rated current. The armature resistance is 1.2 Ω. If the supply voltage drops by 10% with field current unaltered then the resultant speed of the motor in RPM is _______. (Round off to the nearest integer).
Correct : 1350
Similar Questions
A 5 kW, 220 V DC shunt motor has 0.5 Ω armature resistance including brushes. The motor draws a no-load current of 3 A. The field current is constant at 1 A. As...
A separately excited dc motor has an armature resistance Ra=0.05 Ω. The field excitation is kept constant. At an armature voltage of 100 V, the motor...
A 200 V DC series motor, when operating from rated voltage while driving a certain load, draws 10 A current and runs at 1000 r.p.m. [cite: 109] The total series...
Total Unique Visitors
Loading......