Overcurrent protection for steering gear...

Question 1 / 205eccefa4bacbc34ba4d48315

Question 1 of 205eccefa4bacbc34ba4d48315

Overcurrent protection for steering gear systems circuits that power alternating current motors must have an instantaneous trip set at what rating?

Back

Question 1 of 20

5eccefa4bacbc34ba4d48315

Overcurrent protection for steering gear systems circuits that power alternating current motors must have an instantaneous trip set at what rating?

No comments yet

Be the first to share your thoughts!

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

🔍 Key Concepts

• 46 CFR requirements for steering gear overcurrent protection on vessels with AC motors • Difference between protection for steering gear motors and ordinary propulsion/auxiliary motors • Why steering gear must keep running even under heavy rudder loads without tripping off too soon

💭 Think About

• Is steering gear considered a vital system that must remain in operation even under very high load, or can it be allowed to trip off easily? • If a rudder is hard over in heavy seas, would the motor current be closer to its normal rating or significantly above it, and how would that affect the trip setting? • Compare the ranges in each choice: which range allows temporary high current without tripping, but still provides some short-circuit protection?

✅ Before You Answer

• Look up the exact wording in 46 CFR, specifically the section on "steering gear—overcurrent protection" for AC motors • Check that the range is based on the rated full-load current of ONE steering-gear motor, not the combined load of two motors • Confirm that the lower limit is well above 100% of full-load current to prevent nuisance tripping during heavy maneuvering

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

Quick actions

— No credit card needed

Question 1 of 20

Overcurrent protection for steering gear systems circuits that power alternating current motors must have an instantaneous trip set at what rating?

At least 100% and not more than 175% of the rated full-load current of one steering-gear motor.

At least 175% and not more than 200% of the rated full-load current of one steering-gear motor.

At least 200% and not more than 275% of the rated full-load current of one steering-gear motor.

At least 300% and not more than 375% of the rated full-load current of one steering-gear motor.

Loading interactive features...

Question 1 / 205eccefa4bacbc34ba4d48315

Question 1 of 205eccefa4bacbc34ba4d48315

Overcurrent protection for steering gear systems circuits that power alternating current motors must have an instantaneous trip set at what rating?

Back

Question 1 of 20

5eccefa4bacbc34ba4d48315

Overcurrent protection for steering gear systems circuits that power alternating current motors must have an instantaneous trip set at what rating?

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