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The following data were obtained in a boiler trail:
Mass and temperature of feed water: 680 kg/hr and 200C, Steam temperature and its pressure : 15bar and 3000C, Coal used and its calorific value: 98kg/hr and 26500kg/kg, Flue gas formed and its temperature at chimney: 18kg/kg of coal supplied and 3000C, Ash and unburnt coal in ash pit:
44kg/hr with 2200 kj/kg calorific value, Mean specific heat of flue gases and feed water: 1kj/kgK and 4.187 kj/kgK. If the ambient temperature in the boiler room is 280C, Evaluate the:
i) Boiler efficiency,
ii) Equivalent evaporation from and at 1000 C,
iii) Percentage heat unaccounted,
iv) Draught produced in mm of water column if the height of chimney in 50 m.
Cell Connectors A cell connector connects the nearby cell with two terminals of opposite polarity (sign). Post strap connect the plates to the terminal. Electrolyte
Torsion of shaft
Provide short answers to the following questions: a) What the necessary condition for a heat transfer process to occur? b) What is a difference between the steady state c
Q. Material Selection for Insulation? Material for 15ºC to 650ºC temp range is Calcium Silicate, Manville Thermo-12 or approved equivalent. Material for -18ºC to 230ºC temp.
sand casting and its type
A 3-phase, 15-kV, 4-pole, cylindrical rotor synchronous generator is connected to a 50-Hz infinite bus. The synchronous reactance of the machine is X s = 0.6 ohms per phase and th
1- Explain the rationale of using a small WD to improve resolution. 2- In a tungsten SEM , Why does a high accelerating voltage provide the potential for higher resolution? Why
Lighting System : The motorcycle lighting system consists of head light, turn indicators, brake lights and panel board lights. Figure shows a DC circuit of the electrical system
explain in detaile about PART PRINT ANLYSIS)
What do you mean by synchromesh device ? explain the basic working of a synchromesh gear box.
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