Some large A.C. motors are equipped with...

Question 1 of 270705eccefa4bacbc34ba4d4827c

Some large A.C. motors are equipped with heaters. These could be __________. resistance heaters bolted directly to the frame low voltage windings embedded in the motor windings

Back

Question 1 of 27070

Study area:

Some large A.C. motors are equipped with heaters. These could be __________. resistance heaters bolted directly to the frame low voltage windings embedded in the motor windings

No Illustration

This question does not have an illustration

🔍 Key Concepts

• Space heaters in large electric motors and why they are used • Differences between separate resistance heaters and auxiliary (low-voltage) windings • How condensation prevention is accomplished in idle A.C. motors

💭 Think About

• Think about how you could keep the inside of a large motor warm and dry when it is secured/not running. • Ask yourself: can heat be safely applied from both outside the main windings and from within them, and what would each method look like in practice? • Consider typical shipboard practice: what types of anti-condensation heaters have you seen or read about in large motors and generators?

✅ Before You Answer

• Verify whether bolt-on resistance heaters on the frame are a recognized method of preventing condensation in machinery spaces. • Verify whether special low-voltage heater windings embedded in the stator are also used for this same purpose. • Make sure you are not confusing running (operating) windings with separate, dedicated heater or anti-condensation windings.