____ additions are restricted to stainless steels because it is the primary cause of porosity in aluminum welds.

A. Nitrogen
B. Helium
C. Argon
D. Hydrogen


Answer: D

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Which of the following motors provides constant speed from no-load conditions to full-load conditions?

a. Series DC b. Squirrel cage induction c. Synchronous d. Shunt DC

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While having a discussion, Technician A says that BMW's active steering system uses a planetary gearset between the steering wheel and the steering gear. The input is the planetary carrier and the output is the sun gear. Technician B says that the input is the sun gear and the output is the planetary carrier. Who is correct?

A. A only B. B only C. Both A and B D. Neither A nor B

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The "add" mark on the automatic transmission dipstick usually means that how much should be added?

A) 1/4 quart (1/4 liter) B) 1/2 quart (1/2 liter) C) One quart (one liter) D) Any of the above, depending on the vehicle

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Terminal 16 of the OBD-II data link connector is used for what?

A) Chassis ground B) Module (signal ground) C) 12 volts positive D) Manufacturer 's discretion

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