To ensure quality products, which item is most important to include?
A. Double-check your work.
B. Design quality in from the outset.
C. Use a high-tech CAD software program.
D. Use only the most expensive materials.
Answer: B
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Answer the following statement(s) true (T) or false (F)
1. Multispeed AC motors have been used to a great extent in the air conditioning field for many years. 2. Most transistor-controlled variable drives no longer employ insulated gate bipolar transistor (IGBT) transistors. 3. The output voltage to the motor is controlled by pulse width modulation (PWM). 4. The primary purpose of a variable frequency drive is to provide speed control for an AC motor. 5. Current limit controls set the ratio by which the voltage increases as frequency increases or decreases as frequency decreases.
____ are materials added to a concrete mix to achieve certain desired qualities.
a.Aggregates b.Admixtures c.Particulates d.Condensates
All of these are procedures that can help a service technician to diagnose engine faults, EXCEPT ________
A) Cylinder leakage test B) Compression test C) Fuel level test D) Vacuum test
The knot shown in the figure above is a _____
a. square knot
b. clove hitch
c. half hitch
d. bowline