Question 76Motor Plants - QMED70% to pass
According to the illustrated diesel engine cooling water systems diagram, what is the functional description of the low temperature central fresh water thermostat? Illustration MO-0129
AI Explanation
The correct answer is C) The thermostat is a three-way valve set up as a mixer proportioning flow through and around the central fresh water cooler.
This is the correct answer because the low temperature central fresh water thermostat is designed to mix and proportion the flow of coolant, routing some through the central fresh water cooler and some around it. This allows the thermostat to precisely control the temperature of the coolant entering the engine by mixing hot and cold flows. The other options do not accurately describe the function of this three-way mixing valve thermostat.
The other answer choices are incorrect because they either describe a two-way valve that simply throttles flow through or around the cooler, rather than mixing the flows, or they describe a three-way valve acting as a diverter rather than a mixer.
Related Questions
#74 An electric heater built into some smaller diesel engines is used to _______________.#75 According to the illustrated diesel engine cooling water systems diagram, what fluid is the low temperature central fresh water thermostat designed to maintain? Illustration MO-0129 #77 Which of the following problems could develop due to the accumulation of oil vapors in the crankcase of a diesel engine? #78 The purpose of an oil mist detector in a main propulsion diesel engine is to warn of _______________.#79 The possibility of a diesel engine crankcase explosion will be increased by operating an engine _______________.