(Choose tow answers.) a. Completes the electrical circuit by looping two wires tighter on its end. And C. Create current on the circuit 4. A PC NIC and a switch port create one electrical circuit to use when sending data from the PC to the switch.
Continuity Tester - is an item of electrical test equipment used to determine if an electrical path can be established between two points; that is if an electrical circuit can be made. 13. Category 5e/6 Cable - is a twisted pair cable for carrying signals/ is a standardized cable for Gigabit Ethernet and other network physical layers that is backward compatible with the
One major consideration when planning cable duct and trays is the bending radius, the bends must have smooth curves. Although conduits can still be used inside the building, so when a cable is pulled into a conduit, the conduit’s bending radius must be larger than the cable’s minimum bending radius for loaded conditions. Direct burial, aerial and blown fiber installations. Most common is the use of direct burial installations for long cross-country installations. The cables are plowed in or buried in
In an MRI machine the gradient magnets create ‘image slices’ of whichever part of the body is being scanned. A certain part of the body can be selected and focused on simply by changing the gradient magnet slightly. The coil is made for different parts of the body that are being scanned, and can be made for shoulders, knees, elbows, ankles and various other parts. The part of the body that is being imaged will be next to the coil. The coil is the part of the machine that will actually make it work, by giving of a radio frequency.
Connectors - a pointer or link between two data structures Conduit - a tube or trough for protecting electric wiring Racks - framework, typically with rails, bars, hooks, or pegs, for holding or storing things. Punch-Down Blocks- is a type of electrical connection often used in telephony. Consolidation Points- Location where disparate consignments are collected to be shipped together to their final destination. Crimpers- To press or pinch into small regular folds or ridges Fish Tape- is a tool used by electricians to route new wiring through walls and electrical conduit. Cable Toner- device that ensures electricity is going where it needs, and isn't being lost in an unintended place Continuity Tester- tests if two cables can be connected to form a complete circuit Category 5e/6 cable- is a standardized cable for Gigabit Ethernet and other network physical layers that is backward compatible with the Category 5/5e and Category 3 cable standards Binder Groups- Cable pairs are typically arranged under the cable sheath in binder groups Hybrid/ Composite Cable- An assembly of two or more cables (of the same or different types or categories) covered by one overall sheath/ An RCA connector, sometimes called a phono connector or cinch connector, is a type of electrical connector commonly
The scientist has a double slit of known separation. Describe the measurements that need to be taken and explain how they are used to find the wavelength of the light. Discuss any necessary safety precautions and how you would arrange the apparatus to improve accuracy. Measurements * w measured with vernier calliper * D measured with a meter rule Finding the wavelength * Use λ=wsD to obtain value for λ Accuracy * Several fringe spaces measured * Centres of fringes used * Five or more fringes measured * Large value for D * D greater or equal to 2m * Dark room * Repeat measurements Safety * Avoid shing laser at a person * Laser safety goggles * Avoid reflections * Warning sign or light Figure 4 shows a stationary wave on a string. The string is tied onto a thin metal bar at A and fixed at B.
Question 3 2 out of 4 points Measurements in this experiment will be made using a visible spectrometer. Using it correctly will depend on your understanding of its features. Review the document on Making Visible Spectrometer Measurements found in the Course Documents folder. Match each of the following terms about the instrument and the measurements it makes with the correct description. Question Selected Match diffraction grating c. separates white light into its colors phototube detector h. the ratio of the initial intensity of light and that which reaches the
As the name implies, both modems must be synchronized for this method of communication to be successful. Another difference is that synchronous modems were designed for use over regular telephone lines, whereas asynchronous modems were not and depend largely on leased lines environments with dedicated circuits (Dean, 2003). 2. Analog and digital Analog and digital refer to specific signal types, which is an electronic current that carries information. An analog signal refers to an electromagnetic signal that varies in strength as speed over the course of its transmission.
4. B. PC and switch D. Router and hub E. wireless access point and switch 5. B. collisions can happen, but the algorithm defines how the computers should notice a collision and how to recover. 6. C. two PCs, with one cabled to a router Ethernet port with a crossover cable and the other PC cabled to another router Ethernet port with a crossover cable.
Analog signals send out video, voice, data, or image information. Analog transmissions travel by way of carrier signals via Amplitude Modulation (AM) or Frequency Modulation (FM). Digital signals transfer data trough copper wires or optical fibers via electro-magnetic signaling. In today’s society, both analog and digital signaling is prevalent in various forms of communication; therefore, converting signals from analog to digital or vice versa is necessary. Encoding a signal for transmission permits the switching of an analog signal into a digital signal.