Electronics and Communication Engineering - Power Electronics - Discussion
Discussion Forum : Power Electronics - Section 1 (Q.No. 32)
32.
A dc separately excited motor has constant field current. The armature is fed from a single phase supply through a full converter. When a = 0, speed is 500 rpm. If a = 45°, the speed is likely to be
Answer: Option
Explanation:
Average output voltage ∝ cos a and therefore reduced to 0.707 of the value for a = 0. Speed is nearly proportional to voltage.
Discussion:
4 comments Page 1 of 1.
Namita said:
6 years ago
A is the right answer. I also agree.
Spt said:
1 decade ago
0.707 of 500 rpm is nearly 350 rpm.
(2)
Prakash said:
5 years ago
Option A is the correct answer.
Sid said:
8 years ago
Yes, A is the answer.
(1)
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