What is indicated if a voltmeter connected...

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Question 1 of 205iisK7Uxv4MHTR0CKact

What is indicated if a voltmeter connected between the negative side of a ship's DC line and ground reads the full line voltage?

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5iisK7Uxv4MHTR0CKact

What is indicated if a voltmeter connected between the negative side of a ship's DC line and ground reads the full line voltage?

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🔍 Key Concepts

• Ship’s DC distribution: one side of the DC system is normally bonded (connected) to the ship’s hull/ground, and the other side is insulated from ground • Voltmeter reading to ground: what it means when you measure between one pole of a DC system and ground and you get full line voltage vs. half or zero • Ground fault: what it means physically if the ‘wrong’ side of the line is unintentionally connected to the hull

💭 Think About

• Visualize a simple DC system: a battery or generator with a positive and negative terminal, and the ship’s hull as ground. If the negative side is properly grounded, what should a voltmeter between negative and ground read? • Now imagine instead that the positive side is grounded (intentionally or by fault). What would a voltmeter between the negative side and ground read relative to the full line voltage? • Think about whether reversing the generator terminals would change the physical grounding condition or just polarity labels.

✅ Before You Answer

• Before choosing, decide clearly: in a normally grounded DC system, which side (positive or negative) is intended to be at the same potential as the hull? • Mentally sketch the circuit and label: +, −, ground. Mark where the ground connection actually is in each option and what a meter between “−” and ground would see. • Check whether reversing generator terminals alone would fix a side-to-ground fault, or if the real issue is which side of the line is bonded to the hull.

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Question 1 of 205iisK7Uxv4MHTR0CKact

What is indicated if a voltmeter connected between the negative side of a ship's DC line and ground reads the full line voltage?

Back

Question 1 of 20

5iisK7Uxv4MHTR0CKact

What is indicated if a voltmeter connected between the negative side of a ship's DC line and ground reads the full line voltage?

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