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Write a note on superconductors.
Superconductors- The resistivity of most metals rises with increase in temperature and vice-versa. Some metals and chemical compounds are there, whose resistivity becomes zero while their temperature is brought near 00Kelvin (-2730C). At that stage these metals or compounds are be have attained superconductivity. Illustration - mercury becomes superconducting at about 4.5 Kelvin (-268.50C). Superconductivity was discovered through Heike Kamerlingh Onnes. The transition make normal conductivity to superconductivity takes place almost rapidly; this occurs over a very narrow range of temperature regarding 0.050K. The temperature at that the transition takes place from the state of normal conductivity to that of superconductivity is termed as transition temperature. Superconductors are utilized for producing very magnetic fields of approximately 50 Tesla. Magnetic energy can be stored in huge superconductors and drawn as needed to counter the voltage fluctuations throughout peak loading. Superconductors can be utilized to perform logic and storage functions in computers. Since there is no, I2R losses in a superconductor, therefore power can be transmitted by the superconducting cables without any losses. Superconducting property can be vanished by applying external magnetic field as in figure (b). In figure (b) HC is critical magnetic field and TC critical temperature.
Define the XOR GATE - Microprocessor? The XOR GATE is a alike to an OR gate except for the instance when all the inputs are high. With a XOR gate when all the inputs are high t
Thyristor The name thyristor is derived bya combination of the capital letters from thyratron and translstor. This means that thyristor is a solid state device like a
Explain the construction of a MOSFET. Draw the symbols and diagrams of both P-channel and N-channel MOSFET. As JFET and MOSFET also have source, drain and gate. Its gate is ins
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Question 1 (a) Describe the functions of the modulator and source encoder in a digital communications system. (b) By using appropriate examples, distinguish between th
NAND Gate NAND means NOT AND it complements the output of an AND gate. The symbol of NAND by a NOT gate. Generally Not operation is represented by a bubble as shown
Q. Consider two 1-C charges separated by 1min free space. Show that the force exerted on each is about one million tons.
Assume you are working for an SME operating in the microelectronics sector. You are required to plan a new product development project. This is an internal project, so it does not
Voltage Tripler and Quadrupler: Voltage Tripler an extension of the half wave voltage across each diode is 2Vm as it is for the filter capacitor circuit. It should be obvious
how to design load forecasting
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