A piston is at bottom dead center when it is...

Question 1 / 270705eccefa1bacbc34ba4d47523

Question 1 of 270705eccefa1bacbc34ba4d47523

A piston is at bottom dead center when it is __________.

Question 1 of 27070

A piston is at bottom dead center when it is __________.

🔍 Key Concepts

• Piston travel between top dead center (TDC) and bottom dead center (BDC) • Relationship between piston position and cylinder head • How "nearest" and "farthest" describe locations inside the cylinder

💭 Think About

• Picture the cylinder as a tube with the cylinder head on one end and the crankshaft on the other. Where is the piston when it has moved as far away from the head as it can go? • Think about the names: top dead center and bottom dead center. Which one is closest to the cylinder head, and which one is at the opposite end? • Ignore what the ports are doing for a moment. First decide: at bottom dead center, is the piston closer to or farther from the cylinder head?

✅ Before You Answer

• Be clear on where the cylinder head is located in relation to the piston travel • Separate piston position from valve/port timing – don’t let the port actions confuse the location • Verify which phrase correctly matches bottom dead center: closest to head or farthest from head

Question 1 of 27070

A piston is at bottom dead center when it is __________.

opening the exhaust ports

closing the fuel ports

farthest from the cylinder head

nearest to the cylinder head