Speed regulation is accomplished by sensing the speed of the motor and ____.
a. connecting current transformers to the input of the drive
b. feeding this information back to the drive
c. sensing the increase in current as load is added
d. adjusting this speed
b. feeding this information back to the drive
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A technician is testing an undocumented digital system with a signature analyzer. What indications should the technician look for?
A) Look for similar signatures that show up at different points in the circuit; no two points should be the same. B) As signals flow from one circuit to another, changes will take place; look for changes in the signatures, especially between inputs and outputs. C) Without documented signatures, the instrument is basically useless. D) Use a logic analyzer to verify the correct operation of the signature analyzer; once its accuracy has been confirmed, its indications can be relied upon for troubleshooting.
Technician A says a Pozidriv screwdriver should be used to remove a clutch head screw. Technician B says a Phillips screwdriver has more grip and less slippage than a Pozidriv screwdriver. Who is correct?
A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B
The main function of a router is to _____
a. drill holes in wood b. cut metal c. cut patterns in wood d. plane lumber
A piece of shafting is 108² long. Lengths of 16², 18², 30², 8², and 16²are cut from it. Determine how much material remains after these cuts are made. (No allowance is made for material lost in the cutting process.)
What will be an ideal response?