In a rectified DC diesel electric plant,...

Question 1 / 205eccefa4bacbc34ba4d485cc

Question 1 of 205eccefa4bacbc34ba4d485cc

In a rectified DC diesel electric plant, raising the AC generator's field excitation current will have what effect on the DC propulsion motor?

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Question 1 of 20

5eccefa4bacbc34ba4d485cc

In a rectified DC diesel electric plant, raising the AC generator's field excitation current will have what effect on the DC propulsion motor?

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🔍 Key Concepts

• Generator field excitation vs terminal voltage in an AC synchronous generator feeding a rectifier • Effect of DC armature voltage on the speed of a DC propulsion motor at a given load • Difference between DC motor behavior and AC power factor concepts

💭 Think About

• If you raise the field excitation of the AC generator, what normally happens to the generator’s output voltage when the speed and load are held roughly constant? • After rectification, if the DC supply voltage to the propulsion motor changes, how does that affect the speed of a DC motor whose field is unchanged and load is similar? • Look at the answer choices: which ones talk about motor speed, and which ones talk about an AC characteristic that doesn’t really belong to a DC propulsion motor’s operation?

✅ Before You Answer

• Confirm that increased field excitation on a synchronous generator (at constant speed) tends to raise terminal voltage for a given load • Confirm that for a DC motor, at essentially constant field flux, speed is roughly proportional to applied armature voltage • Verify that power factor is an AC-side concept, while the propulsion motor in the question is DC, fed from a rectified source

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Question 1 of 20

In a rectified DC diesel electric plant, raising the AC generator's field excitation current will have what effect on the DC propulsion motor?

increase in speed

decrease in speed

operate with a lower power factor

operate with a higher power factor

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Question 1 / 205eccefa4bacbc34ba4d485cc

Question 1 of 205eccefa4bacbc34ba4d485cc

In a rectified DC diesel electric plant, raising the AC generator's field excitation current will have what effect on the DC propulsion motor?

Back

Question 1 of 20

5eccefa4bacbc34ba4d485cc

In a rectified DC diesel electric plant, raising the AC generator's field excitation current will have what effect on the DC propulsion motor?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed