If the supply voltage for a D.C. motor is increased, which of the following will decrease ?
Correct answer: C. Full-load current
- A. Starting torque
- B. Operating speed
- C. Full-load current
- D. All of the above
Explanation
For a shunt motor, increasing supply voltage raises speed and usually raises starting torque. At the same full-load output, the higher voltage and back emf reduce the required line current, making option c the intended answer.
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