A vehicle comes into the shop and the technician retrieves the diagnostic code P0401 "EGR flow insufficient." Which of these could be the cause?
A) EGR valve stuck open B) Clogged EGR ports or passages
C) Electrical wiring shorted D) All of these are correct.
D
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How is a smoke candle used when troubleshooting an open display case?
A) It shows the air curtain pattern. B) Smoke candles are used to calibrate the case modulation damper. C) It helps locate refrigerant leaks. D) It helps technicians trace the flow of refrigerant through the case.
Which of the following equations would accurately describe a 4-input OR gate when A = 1, B = 1, C = 0, and D = 0?
A) 1 + 1 + 0 + 0 = 00 B) 1 + 1 + 0 + 0 = 0 C) 1 + 1 + 0 + 0 = 01 D) 1 + 1 + 0 + 0 = 1
Although shielding gases are not toxic, they _____
a. are highly explosive b. can decompose into toxic gases c. can displace oxygen when released in a large quantity d. cause rapid metal corrosion
Many smartphones include a hotspot feature that enables them to act as Wi-Fi APs.
Answer the following statement true (T) or false (F)