Why are the EGR gases cooled before entering the engine on some engines?
A) To help prevent the exhaust from slowing down
B) To prevent heating the air-fuel mixture in the cylinder
C) To prevent damage to the intake valves
D) Cool exhaust gas is more effective at controlling NOx emissions
D
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The formula for inductive reactance is _____.
a. XL = 1 ÷ 2?fL b. XL = 2 ÷ ?fL c. XL = 2? ÷ fL d. XL = 2?fL
The maximum level of sound that a human can tolerate without experiencing pain is:
What will be an ideal response?
Which foods did most ordinary Europeans eat throughout the eighteenth century?
a. bread and soup b. bread and meat c. bread and root vegetables d. meat and root vegetables
When ohming components on the system, it is important to:
A) Work quickly before the power comes back on. B) Turn on the power to the unit. C) Make sure the component is still wired in the circuit. D) Turn off the power to the unit.