Ethylene glycol, when used as a coolant in a closed cooling system for a diesel engine, is more advantageous than untreated raw water because it __________.
⢠Physical properties of ethylene glycol as an antifreeze/coolant ⢠How a coolantâs freezing point and boiling point affect engine operation ⢠Purpose of a closed cooling system on a diesel engine
⢠Think about what happens to a coolant in both very cold and very hot operating conditionsâwhat properties help protect the engine in each case? ⢠Which option describes the typical behavior of antifreeze mixtures (like ethylene glycol and water) compared to plain water? ⢠How would changing the coolantâs freezing and boiling points help prevent damage to engine components?
⢠Compare each optionâs statement about freezing point vs. water: does it go up or down for common antifreeze? ⢠Compare each optionâs statement about boiling point vs. water: does it go up or down in a pressurized, closed system with ethylene glycol? ⢠Eliminate any choice that conflicts with what you know about automotive or marine antifreeze behavior in everyday use.
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