It is advisable to start a DC series motor with some load to
A. Limit the speed.
B. Limit the current.
C. Limit the flux.
D. Avoid sparking.
Show Answer
Answer: A
Share your understanding of this question with the correct explanation.
It is advisable to start a DC series motor with some load to limit the speed.
DC series motors are known for their high starting torque characteristics, which means they can produce a large amount of torque when starting up. Without any load, the motor can accelerate rapidly, reaching dangerously high speeds.
By starting a DC series motor with some load applied, the load torque acts as a mechanical resistance to the motor’s rotation. This load helps limit the speed of the motor during the startup phase.
The load torque also balances the electrical torque produced by the motor, preventing the motor from accelerating too quickly and reaching unsafe speeds. It provides a controlled starting condition and ensures that the motor starts up smoothly and safely.
Therefore, the correct answer is A: Limit the speed. Starting a DC series motor with some load helps limit the speed of the motor during startup, ensuring a safe and controlled starting process.