Question

. A 500-V, 37.3 kW, 1000 r.p.m. d.c shunt motor has on full-load an efficiency of 90
percent. The armature circuit resistance is 0.24

and there is total voltage drop of 2
V at the brushes. The field current is 1.8 a. Determine (i) full-load line current (ii) full
load shaft torque in N-m and (iii) total resistance in motor starter to limit the starting
current to 1.5 times the full-load current.

Answer 1

Answer:

02: A 500V, 50 h.p (37.3 kW), 1000 r.p.m, D.C, shunt motor has an full load an efficiency of 90%. The armature circuit resistance is 0.24 2 and there is total voltage drop of 2 V at the brushes. The field current is 1.8A. Determine. 1- Full - load line current. 2- Full - load shaft torque in N.m 3- Total resistance in motor starter to limit the starting current to 1.5 times the full - load current. (10 Marks)