Q8 (10 Marks)
Calculations
MET • Written Exam
(a) Explain about the various speed control methods of DC series motors. (6)
(b) The Armature circuit resistance of an 18.65KW 250V series motor is 0.1Ω. The brush voltage drop is 3V and series field resistance is 0.05Ω. When the motor takes 80A speed is 600 r.p.m. Find the speed when the motor is 100 A.
Appeared In:
Nov 2022