Explain the purpose of the sealer on the outside surface of a seal housing.
What will be an ideal response?
When a seal is installed, this sealer prevents leaks between the seal and the housing.
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How should you charge an R134a or R404 reach-in that uses a cap tube system?
a. Weigh in the charge per the nameplate. b. Charge to a 30° condenser split (25 ° for freezers). c. Charge to a clear sight glass, proper condenser split, and 10° subcooling.
A thermocouple placed in a certain medium produces readings within 0.1°C of the true temperature 70% of the time, readings more than 0.1°C above the true temperature 10% of the time, and readings more than 0.1°C below the true temperature 20% of the time.
a. In a series of 10 independent readings, what is the probability that 5 are within 0.1°C of the true temperature, 2 are more than 0.1°C above, and 3 are more than 0.1°C below? b. What is the probability that more than 8 of the readings are within 0.1°C of the true temperature?
When starting a gas-powered utility tractor, set the throttle to _____
a. low idle b. one-quarter c. one-third to one-half d. one-half to three-quarters
What could cause a red or orange tint to be present on the electrodes?
What will be an ideal response?