What does blue smoke in the exhaust usually indicate?
A. Ignition misfires.
B. DPF failure.
C. Air in the high pressure fuel circuit.
D. Lube oil in the combustion process.
Answer: D
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Determine the length of a 60.0° arc for a circle with a diameter of 8.00 meters. Express the answer to 2 decimal places and use 
= 3.14.
Fill in the blank(s) with the appropriate word(s).
High-side drivers will generally incorporate_________technology to control the power side of the circuit.
Fill in the blank(s) with the appropriate word(s).
Why do fiberglass ductboard and flex duct have higher friction loss rates than sheet metal?
What will be an ideal response?
Eight resistances are connected in series as shown. The unit of measure for resistance is the ohm. The resistance in a series circuit is the sum of all resistances in that circuit. Find the total amount of resistance in the circuit.
A. 
B. 
C. 
D. 