The simplest connection between a sending device and receiving device is ________
A) a wire B) a coaxial cable
C) a fiber optic cable D) a shielded twisted pair
A
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A 1.8 degrees stepper motor is directly connected to a machine table driven by a lead screw with eight threads per inch. (Note that pitch is the axial distance traveled for one revolution of the screw).
Determine the axial distance traveled by the lead screw when an external input of 4355 pulses is sent to the motor. A separate encoder is connected to the other end of the lead screw. The encoder generates 180 pulses/rev. What will be the number of pulses in the above case? What will be an ideal response?
Any time a fuse is replaced or a breaker is reset, which of the following should be checked before operating the system?
A) Run the system and check the amp draw on the circuit to the unit and at each major load. B) Check all major line voltage loads for shorts or grounds. C) Check the main power wire connections. D) All of these should be checked.
The seven basic SI units are derived from the metric system of physical units. What does the unit Mole (mol) stand for?
A. Temperature B. Amount of substance C. Length D. Time
Plumbing prints are made up of lines and symbols that show how liquids, gases, or solids are transported to various locations in the structure. Plumbing lines and features are drawn thicker than wall lines so they are clearly distinguishable. Symbols identify types of pipes, fittings, valves, and other components of the system. Sizes and specifications are provided in local or general notes.
Answer the following statement true (T) or false (F)