Resistance welding machines contain a(n) ____ to regulate the timing of the weld cycle.

A. mechanical system
B. electrical circuit
C. current regulator
D. control system


Answer: D

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La iluminación en riel en una pared debe instalarse por lo menos _____ encima del suelo a menos que esté protegido o sea un riel de tipo de baja tensión.

a. 5' (1,52 m) b. 6' (1,83 m) c. 8' (2,44 m) d. 10' (3,04 m)

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Which of these operations should be performed first?

A) Grinding the valves B) Grinding the seats C) Installing replacement guides D) Resurfacing the head

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Two technicians are discussing disc brake rotor service. Technician A says that the inner races (bearing cups) should be removed from the rotor before it is mounted on the lathe. Technician B says that a non-directional finish on the rotor surfaces can be obtained by using sandpaper. Which technician is correct?

A) Technician A only B) Technician B only C) Both Technicians A and B D) Neither Technician A nor B

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D = Diameter of circleCarry the answer to two decimal places. A circle has a circumference of 31.4 meters. What is the diameter?

Fill in the blank(s) with the appropriate word(s).

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