With an AC synchronous electric propulsion...

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Question 1 of 2066636eed28f7522a1c51d2eb

With an AC synchronous electric propulsion motor driving a fixed-pitch propeller, whenever there is a direction reversal ordered from the bridge, there is a process of electrical braking used to slow the motor down before the shaft actually reverses. What is the name of this process?

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🔍 Key Concepts

• Behavior of an AC synchronous motor when reducing speed or reversing direction • Difference between mechanical braking (using physical contact) and electrical braking (using current and magnetic fields) • How kinetic energy of the rotating shaft can be handled: returned to the supply, dissipated as heat, or absorbed mechanically

💭 Think About

• Ask yourself: In this situation, is the motor primarily being slowed down by electrical current in the windings, or by a physical device attached to the shaft? • Consider which option names a process that involves converting the motor’s rotational energy into electrical energy and then into heat in resistors or back into the system. • Think about which terms are commonly used in electric motor control for slowing or stopping large propulsion motors without relying on physical friction surfaces.

✅ Before You Answer

• Eliminate any option that clearly describes purely mechanical braking methods. • Focus on terms commonly used with electric motor drives and propulsion control systems for speed reduction and reversal. • Verify which term is associated with using the motor as a generator versus simply dumping energy into resistors as heat.

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