The device labeled "B" in the illustration...

Question 1 / 270705eccefa1bacbc34ba4d4766f

Question 1 of 270705eccefa1bacbc34ba4d4766f

The device labeled "B" in the illustration is a __________. See illustration MO-0122.

Back

Question 1 of 27070

The device labeled "B" in the illustration is a __________. See illustration MO-0122.

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

🔍 Key Concepts

• Four-stroke diesel engine timing and the normal speed relationship between the crankshaft and camshaft • How gear ratios between meshing gears determine relative rotational speeds • Which shaft in a four-stroke engine must complete one revolution vs. two revolutions for a full engine cycle

💭 Think About

• Look at where label "B" is located in the gear train: is it attached to the crankshaft or to the camshaft? • For a four-stroke cycle, how many turns does the crankshaft make for each full cycle of valve operation controlled by the camshaft? • If two gears of different sizes mesh, which one turns faster, the smaller or the larger, and how does that relate to crankshaft vs. camshaft speed?

✅ Before You Answer

• Verify whether B is physically drawn on the crankshaft gear or on the camshaft gear in the illustration • Confirm the basic rule: in a four-stroke engine, the crankshaft must rotate how many times for each camshaft revolution? • Check that your choice’s wording matches both the component at B and the correct speed ratio between crankshaft and camshaft

Question 1 of 27070

The device labeled "B" in the illustration is a __________. See illustration MO-0122.

crankshaft rotating at twice the speed of the camshaft

camshaft rotating at the speed of the crankshaft

crankshaft rotating at the speed of the camshaft

camshaft rotating at twice the speed of the crankshaft

Question 1 / 270705eccefa1bacbc34ba4d4766f

Question 1 of 270705eccefa1bacbc34ba4d4766f

The device labeled "B" in the illustration is a __________. See illustration MO-0122.

Back

Question 1 of 27070

The device labeled "B" in the illustration is a __________. See illustration MO-0122.

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