STEAM TURBINES A steam turbine is a prime mover which converts heat energy into mechanical energy. In a conventional steam turbines cycle‚ water is used as the working fluid. The water is heated in a boiler by burning fuel. It evaporates into steam which is expanded in a turbine where mechanical power is generated. The steam generated is of high temperature and high pressure. The temperature is often in the 450 to 540 degrees centigrade range. The pressure ranges between 60 and 120 bar. The
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OSI Reference Model 1 - OSI Reference Model Network Reference Models A computer network connects two or more devices together to share information and services. Multiple networks connected together form an internetwork. Internetworking present challenges - interoperating between products from different manufacturers requires consistent standards. Network reference models were developed to address these challenges. A network reference model serves as a blueprint‚ detailing how communication
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Goals‚ Applications‚ Structure of communication network‚ Components‚ Types of Networks(LAN‚ MAN‚ WAN‚ Internet)‚ Broadcast & Point-To-Point Networks‚ Communications Types(Synchronous ‚ Asynchronous)‚ Modes of Communication :(Simplex‚ Half Duplex‚ Full Duplex) Unit-II (10) Transmission Media Classes of Transmission Media - Guided Media(Wired) : Coaxial Cable‚ Twisted Pair‚ Fiber Optics Cable‚ Advantages & disadvantages‚ Unguided Media(Wireless) : Propagation Methods(Ground‚ Sky‚ Line-Of-Sight)
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. REVISION QUESTIONS Corrosion OP - Monday Is the electrical circuit in a corrosion reaction AC or DC? 1 Does corrosion occur at the cathode or at the anode? 2 Name the three factors needed for corrosion to occur. 3 What is meant by the term electrolyte? 4 What is corrosion? 5 In the corrosion circuit do electrons flow from anode to cathode? 6 Which gas is released at the cathode when the electrolyte is water? 7 Which is the more noble metal‚ steel or Aluminium? 8 Which
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and the noise it has accumulated. 4. What is the origin of the word “modem?” (B) Modulator/ demodulator 5. With everything else being equal‚ which of the following transmission techniques is capable of the greatest throughput? (C) Full-duplex 10. What part of a cable protects it against environmental damage? (A) Sheath 11. With everything else being equal‚ a network using which of the following UTP types will suffer the most cross talk? (A) CAT 3 12. What are two
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United States sign up for and start using a cellular phone. With a cell phone you can talk to anyone on the planet from just about anywhere (80% of the U.S. has coverage). A cell phone is really an extremely sophisticated radio. A cell phone is a duplex device which uses one frequency for talking and a second‚ separate frequency‚ for listening. A cell phone can communicate on 1‚664 channels and operate within cells. They can switch cells as they move around. Cells give cell phones incredible range
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PComputer network A computer network is simply two or more computers connected together so they can exchange information. A small network can be as simple as two computers linked together by a single cable. This course introduces you to the hardware and software needed for a network‚ and explains how a small network is different from larger networks and the Internet. Most networks use hubs to connect computers together. A large network may connect thousands of computers and other devices together
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TESTOUT OF NETW202 1.Which form of communication is a real-time‚ text-based communication type used between two or more people who use mostly text to communicate? A. Weblogs B. Wikis C. Instant messaging D. Podcasting C. Instant messaging is the only answer that is both text based and real time. 2. Which type of network provides customers with limited access to corporate data such as inventory‚ parts lists‚ and orders? A. Intranet B. Extranet C. Internetwork D. Internet B. An extranet
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USB 1: USB 1 is the first one established and realized in January 1996. It provided 1.5 Mb/s which is a low speed and 12 Mb/s which is a high speed transfer rates. Some of this data transfer rate is going for USB protocol so the exact data rate is less than the one above. Because of the limitation in timing and power‚ USB 1.0 did not allow for extension cables or pass-through monitors. Then USB 1.1 released in September 1998 to fix the problems related to using hubs that appeared in 1.0. This version
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the parent in some situations she and I were placed in‚ maybe due to her recklessness? Maybe it was the disabilites? Regardless‚ the day before she died we got into an all too common arguement. This had to do with breaking the lease on yet another duplex‚
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