The 3-sample running averager has b0 = b1 = b2 = 1/3. When xi=sin(2?i/8), the output value y2 = ________ (x.xx).
Fill in the blank(s) with the appropriate word(s).
y2 = x2/3 + x1/3 + x0/3. x0=sin(0)=0,x1=sin(?/4)=0.707,x2=sin(?/2)=1.
y2 = 1.707/3 = 0.569
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In a variable frequency drive, the ____________________ circuit converts incoming AC power to DC.
Fill in the blank(s) with the appropriate word(s).
Technician A says that two diodes are required for each stator winding lead. Technician B says that diodes change alternating current into direct current
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
________ is concerned with the end use of the item and what it is expected to do
A) Functional specification B) Production department C) Quantity required D) all of the above
When performing an initial system check, a TAB technician determines that the total airflow the blower is moving cannot be adjusted to meet design specifications. This could indicate that:
A) There is no air filter installed. B) There is too much restriction in the ductwork. C) There are leaks in the supply-side ductwork. D) There are leaks in the return-side ductwork. Match the type of system to the application.