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Consider a home heating system consisting of a natural gas-flied furnace and a thermostat. In this case the process consists of the interior space to be heated. The thermostat contains both the measuring element and the controller. The furnace is either on (heating) or off. Draw a schematic diagram for this control system. On your diagram, identify the controlled variables, manipulated variables, and disturbance variables. Be suit to include several possible sources of disturbances that can affect room temperature.
Consider the operation of a dc shunt motor that is affected by the following changes in its operating conditions. Explain the corresponding approximate changes in the armature current and speed of the machine for each change in operating condition..
The sphere is hung from the ceiling and you pull the other half with the force of your body weight. Will the hemispheres come apart? Support your answer with calculations.
A 50-kW, 230-V compound generator has the following data: armature-circuit resistance 0.05 Ω, series-field circuit resistance 0.05 Ω, and shunt- field circuit resistance 125Ω.
Draw a block diagram for the controlsystem.
In an experiment to determine specific gravity of a soil sample, the following data is obtained:Mass of empty pycnometer 20.4 g Mass of pycnometer with soil sample 51.6 g Mass of pycnometer with soil sample filled with water 88.6 g Mass of pycnome..
Two compartments, with equal volumes of 0:0572 cm3, are separated by a thin membrane. If all of the solute is initially dumped into one compartment, then find the transfer rate if the time constant equals 27 103 s.
A mixture of benzene and toluene containing 60 mole percent benzene is to be separated into an overhead product containing 96 mole percent benzene and a bottoms containing 25 mole percent benzene.
Determine the properties of the gas-vapour mixture using suitable models. Derive psychrometric relationships for the gas-vapour mixture and create the associated
A solution that contains nitromethane in acetonitrile is heated at constant pressure of 1 bar until the first bubble appears. If the temperature at this point is 85 °C, what is the composition of the original solution?
Estimate the temperature of saturated steam which must be used when the exchanger is new (i.e., no scale present) if the water enters the unit at a rate of 15,000 gph and is heated from 70 to 150°F.
A system can be represented by the block diagram below: Derive (write the different steps explicitly. not just the solution!) the closed-loop transfer function relating the set point (Ysp) to the output Y
If oxygen is fed at 20 °C and 1 atm, what is the volume flow rate of oxygen to the furnace?
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