What does a mixing valve do in a hydronic heating system?
A) it mixes hot water from the boiler with cold tap water
B) it mixes hot water from the boiler with cooler return water
C) it mixes water from two zones to return to the boiler
D) it mixes cold feed water to the boiler with warmer return water
B
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A megohmmeter is a type of high voltage meter. It is also known as an insulation ____________________ tester because it is used to test insulation in high-voltage systems.
Fill in the blank(s) with the appropriate word(s).
What is another way of describing a Navistar engine that is managed by separate ECM, injector driver (IDM) and personality modules?
A. consolidated engine controller (CEC) B. three box system C. Gen III Diamond Logic D. Triple Logic System
Using the diagram, determine the measure of ?3.
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Fill in the blank(s) with the appropriate word(s).
Technician A says no wheel speed sensors are adjustable. Technician B says improper tire size can set ABS system faults. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician