Technician A says that a good relay should measure between 60 and 100 ohms across the coil terminals Technician B says that OL should be displayed on an ohmmeter when touching terminals 30 and 87. Which technician is correct?
A) Technician A only
B) Technician B only
C) Both technicians A and B
D) Neither technician A nor B
C
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________ is a peptide hormone that is involved in the control of day-length-sensitive flowering.
Fill in the blank(s) with the appropriate word(s).
Which computer sensor should be replaced to help ensure that the engine will be operating at the correct air-fuel ratio?
A) Oxygen sensor B) Throttle position sensor C) Manifold absolute pressure sensor D) Engine coolant temperature sensor
What is the CFM of air moving through an 8 in × 10 induct if the air velocity is 800 FPM?
A) 8 × 10 = 80 sq in, 80/144 = 0.56 sq ft, 800 × 0.56 = 444 CFM B) 8 × 10 = 80 sq in, 800/80 = 10 CFM C) 800 CFM D) 8 × 10 = 80 sq in, 80/144 = 0.56 sq ft, 800/0.56 = 1,428 CFM
Why should liquid refrigerant not be introduced into an evacuated chiller?
A) The liquid can flash at sub-freezing temperatures and freeze the chiller bundles. B) Liquid charging is slow and chillers hold a lot of refrigerant. C) The liquid refrigerant might boil and overheat the water in the chiller. D) Adding refrigerant would ruin the vacuum.