What shade lens should be worn when gas welding?

A. No. 3
B. No. 5
C. as dark as you want
D. no lenses are needed


Answer: B

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One cubic foot of water has a weight of _____.

a. 7.48 pounds b. 8.33 pounds c. 37.5 pounds d. 62.31 pounds

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GDI fuel injectors operate under a pressure of about _______

A) 500 to 2,900 PSI B) 2,000 to 5,000 PSI C) 90 to 150 PSI D) 35 to 45 PSI

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A duty cycle of 90% means that the alternator field current is off most of the time

A) True B) False

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In a direct digital control system the primary controller is the:

A) Voltage amplifier. B) Wheatstone bridge. C) Bleed-type thermostat. D) HVACR computer.

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