When should DTCs be cleared?
A) After pinpointing a problem cylinder B) After the repair has been verified.
C) After the problem has been verified. D) After consulting TSBs
B
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A(n) ____________________ is a copper braid with dried flux included in the braid.
Fill in the blank(s) with the appropriate word(s).
The data in Fig. 8.15 of Decker and Harper corresponding to the complete recrystallization of pure copper are:
(a) Use the above data to determine the activation energy Q, and the pre exponential constant A inthe rate equation for recrystallization, Eq 8.5.
(b) Determine the recrystallization temperature for copper; the temperature corresponding tocomplete recrystallization in 1 hour.
(c) How long would it take to completely recrystallize the copper at room temperature?
Answer the following statement(s) true (T) or false (F)
1. The work of the modern electrician requires a knowledge of National Electrical Code® requirements that govern three-phase motor installations and the ability to apply these requirements to installations. 2. NEC® Article 430.52 Exception 1 states that if the values for branch-circuit protective devices as determined using the percentages in Table 430.52 do not correspond to the standard device sizes or ratings, then the nearest smaller size rating or setting should be used. 3. When the conductors of a feeder supply two or more motors, the required wire size is determined using Code rules. 4. Wire types and sizes are selected by the ambient temperatures of the place of installation and the economics of the total installation, such as the minimum size of conduits, cost of the wire sizes, and labor cost for installing the various selections. 5. The NEC® guides an electrician through the main components of the calculation, thus providing all the information that is necessary for a motor installation.
A sling psychrometer can be used to determine the relative humidity by comparing:
A) The dry-bulb and wet-bulb readings. B) The psychrometer reading to a barometer reading. C) The psychrometer reading to the manufacturer's charging chart. D) The still reading and the moving reading.