Electrical Engineering · DC Machines
Why is armature resistance control not suitable for speed control in high-power DC motors?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
Share:
- 1It increases the shunt field current excessively.
- 2It causes high periodic torque oscillations.
- 3It is completely incapable of reducing the speed below the rated speed.
- 4It results in extremely low operating efficiency due to large power losses in the external resistor.✓
Correct answer
It results in extremely low operating efficiency due to large power losses in the external resistor.
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
👥
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Online Test Series
Start Free Mock Test →Preparing for Electrical Engineering?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Chapter Practice
Practice DC Machines MCQs →Want more practice questions on DC Machines?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Electrical Engineering · DC Machines