If the resistance against a centrifugal blower is doubled, the cfm output decreases, and the amperage draw of the motor ____.
A. decreases slightly
B. increases slightly
C. stays the same
D. overheats the motor
Answer: A
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Single insulated feeder and branch circuit conductors may be used to supply power for temporary testing, emergencies, experiments, and developmental work where accessible _____.
a. to the general public b. to qualified persons only c. during daytime hours d. to a 600V service
This geometric tolerance requires that the actual feature be between two parallel planes or lines that are perpendicular to a datum.
a. profile b. parallelism c. perpendicularity d. angularity
What is the maximum reading on a typical R-22 compound gauge?
A) 800 psig B) 120 psig C) 300 psig D) 500 psig
Technician A says that the crankshaft determines the stroke of an engine. Technician B says that the length of the connecting rod determines the stroke of an engine. Which technician is correct?
A) Technician A only B) Technician B only C) Both Technicians A and B D) Neither Technician A nor B