Explanation: Also, a small error in the measurement of either output or input causes the same amount of error in the computed efficiency. 3. Which of the following statements are correct regarding brush contact losses?
A. In DC machine: proportional to armature current
B. In synchronous machine: neglected
C. In induction machine: neglected
D. Any of the mentioned
Answer:A
Explanation: Also, a small error in the measurement of either output or input causes the same amount of error in the computed efficiency. 3. Which of the following statements are correct regarding brush contact losses?
A. In DC machine: proportional to armature current B. In synchronous machine: neglected C. In induction machine: neglected D. Any of the mentioned