Which type of ballast has the highest efficiency?
a. Electronic instant-start
b. Electronic rapid-start
c. Standard
d. Hybrid
a. Electronic instant-start
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IDENTIFY TEST PROCESS SYMBOLS AND DIAGRAMS
How many degrees of CAMSHAFT rotation are needed for a piston to travel from TDC to BDC and return to TDC?
A) 90 B) 180 C) 720 D) 360
What are the two types of thermocouple temperature sensors commonly used in HVACR work?
A) Positive and negative temperature coefficient thermocouples B) Type 1 and type 2 thermocouples C) Type A and type B thermocouples D) Type J and type K thermocouples
A bearing on a large machine is tested over a period of 8 hours at a speed of 40,500 revolutions per hour. How many revolutions does the shaft turn in the bearing during the test period?
Fill in the blank(s) with the appropriate word(s).