engineering recuitment UPPCL Technician Electrician 2022 Mock Test Electrician and Wireman Electrical Machines Alternators
When excitation of 3-phase synchronous motor increases, then
(a) armature current increases and then decreases
(b) power factor decreases and then increases
(c) armature current decreases and then increases
(d) power factor increases and then decreases
1
(a) and (b) are true
2
(b) and (c) are true
3
(c) and (d) are true
4
(d) and (a) are true