List four desired properties of refrigerants.
What will be an ideal response?
Environmentally friendly
Non-toxic
Non-flammable
Chemically stable
Recyclable
Relatively low cost
Detectable at low concentrations
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Indicate whether the statement is true or false
Which sensor is used to determine engine load?
A) TP B) ECT C) MAP D) RPM
Visible light striking a prism causes refraction at both air/glass interfaces and separates the light into its various frequencies, which appear as__________
A. fibers B. beamwidths C. colors D. pulses
During cold start of diesel engines what is usually disabled during cranking?
A. All exhaust aftertreatment devices. B. Gear shift input. C. Ether injection circuit. D. Accelerator pedal input.