How is the Annual Fuel Utilization Efficiency (AFUE) efficiency rating determined?
A) by multiplying the amount of combustion air with BTU output
B) using the NIST equation for 100 percent efficiency
C) using the NIST equation for 100 percent efficiency minus losses
D) by comparing new furnace units to the efficiency of older models
C
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___________________ strives to eliminate or minimize any process, operation or material usage that does not contribute to an efficient maintenance operation
A. corrective maintenance B. preventive maintenance C. lean maintenance D. JIT maintenance
When chips and flakes of metal separate from a U-joint trunnion race due to metal fatigue, how would the failure be categorized?
A. brinelling B. false brinelling C. spalling D. galling
The cutting plane has an associated ______________________________, identified by a set of arrows pointing in the direction of the freshly cut surface that is to be viewed.
Fill in the blank(s) with the appropriate word(s).
Cranking mode is being discussed. Technician A says extra injector pulses may be used to richen the mixture. Technician B says an extra injector may be used to richen the mixture. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B