When starting a diesel engine at...

Question 1 / 205eccefa3bacbc34ba4d47db3

Question 1 of 205eccefa3bacbc34ba4d47db3

When starting a diesel engine at temperatures below 70°F, the frictional resistance to turning will be __________.

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Question 1 of 20

5eccefa3bacbc34ba4d47db3

When starting a diesel engine at temperatures below 70°F, the frictional resistance to turning will be __________.

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🔍 Key Concepts

• Effect of low temperature on lube oil viscosity in diesel engines • Relationship between viscosity and ability of parts to move/slide • What factors actually change mechanical friction during engine start

💭 Think About

• Think about what happens to lubricating oil when temperatures drop below 70°F: does it get thinner or thicker, and how does that affect friction? • Which of the options describes a condition that changes with temperature in a way that would directly affect turning resistance? • Consider which choices are realistic: can an operator easily change compression ratio or completely eliminate friction just by heating intake air?

✅ Before You Answer

• Identify which option involves a property that varies strongly with temperature. • Check which factor is directly tied to how easily moving parts slide over each other. • Eliminate any answers that suggest you can totally eliminate friction, or that are not practically adjustable during normal operation.

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Question 1 of 20

When starting a diesel engine at temperatures below 70°F, the frictional resistance to turning will be __________.

reduced by increasing lube oil pressure

controlled by reducing the compression ratio

proportional to the lube oil viscosity

eliminated by heating the intake air

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Question 1 / 205eccefa3bacbc34ba4d47db3

Question 1 of 205eccefa3bacbc34ba4d47db3

When starting a diesel engine at temperatures below 70°F, the frictional resistance to turning will be __________.

Back

Question 1 of 20

5eccefa3bacbc34ba4d47db3

When starting a diesel engine at temperatures below 70°F, the frictional resistance to turning will be __________.

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