For steel identified as SAE 1020, the first two numbers (10) identify the type of steel and the last two numbers (20) specify the approximate amount of carbon in hundredths of a percent (0.20% carbon).
Answer the following statement true (T) or false (F)
True
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It is not recommended to drill a small pilot hole before trying to drill a larger diameter hole in metal.
Answer the following statement true (T) or false (F)
The use of fittings in sheet metal duct systems is limited because fittings _____.
a. are expensive b. are unattractive c. create a significant friction loss d. must be fabricated on the job
The term MOST-Likely used to describe a high-speed voltmeter with a built-in time frame is:
A. dwell B. hard fault C. spike D. scope
Technician A says that closed loop is the most efficient operating mode and allows the engine computer to control the air-fuel ratio with the most precision. Technician B says that open loop operation is used to improve performance during cold engine warm-up and is also used under heavy load or during wide open throttle operation. Who is correct?
A. Technician A only B. Technician B only C. Both technicians D. Neither technician