What is the primary safety concern when working with R-410A?
What will be an ideal response?
HFC-410A operates at much higher pressures than most conventional refrigerants. Approximately 40% - 60% higher than R-22.
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A glazing stop is used ___________.
A) to provide lateral support to glass. B) to provide a cushion between the glass and the glazing pocket. C) to seal the glass against water and air infiltration. D) as a bearing support for glass. E) none of the above.
Which EVAP valve(s) is (are) normally closed?
A) Canister purge valve B) Neither canister nor canister vent valve C) Both canister purge and canister vent valves D) Canister vent valve
Which of the following suspension system components play a role in positioning an axle?
A. torque rods B. centerbolts C. torque leafs D. all of the above
The square wave is made up of:
A) the fundamental frequency and all the odd harmonics. B) the fundamental frequency and all the even harmonics. C) the fundamental frequency and both the odd and even harmonics. D) just the fundamental frequency.