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using the passive sign convention the voltage across a device is v t 240 cos 314t v and the current through the device
computer data sheet a manufacturers data sheet for a notebook computer lists the power supply requirements as 75 a 5 v
light source comparison today people have three competing light sources for home use this problem asks you to determine
1 the current through a 33-komega resistor is 22 ma find the voltage across the resistor2 the voltage across a
1 you can choose to connect either a 47-komega resistor or a 47-komega resistor across a 5-v source which will draw the
1 a 100-komega resistor dissipates 50 mw find the current through the resistor2 the conductance of a particular
1 show that the entropy production rate per unit volume sigma is always positive for a thermocouple regardless of the
suppose the vessels used in example 1 and 2 are arranged so that no heat transfer occurs between them along the
the seebeck voltage to relative temperature t conversion for an iron-constantan thermocouple with an ice point 000degc
the seebeck voltage to relative temperature t conversion for a copper-constantan thermocouple with an ice point
1 the net negative charge flowing through a device varies as q t 22 t2c find the current through the device at t 0 05
question 1a three-phase 225kv24kv 60 hz transformer with delta-delta connection is supplying a load of 24kv 325mva with
1 calculate sfgnbspfor water at 100degc using the gibbs phase equilibrium conditions and compare it with the value
a solar water heater is used to increase the temperature of liquid water in an open cattle watering tank from 300degc
1 an automobile engine has a carnot thermal efficiency of 560 and an actual thermal efficiency of 210 determine the
1 the heat-master is a new heat pump design that has a carnot cop coefficient of performance of 155 however its actual
1 the cool-master is a new window air conditioner design that has a carnot coefficient of performance cop of 189
liquid water is to be heated in a nonmixing heat exchanger with waste steam the liquid water an incompressible liquid
the inlet air to a gas turbine engine is preheated with the engines exhaust gases the preheater is insulated so that
can you believe that 0800 kgs of air at 600degc and 150 mpa is mixed in an open heat exchanger with 150 kgs of air at
a student is using a bathtub with separate hot and cold water faucets the student turns on both faucets and adjusts
carry out the preliminary design of a closed domestic hot water heater that has a first law efficiency of at least 950
prepare the preliminary design of a commercial open liquid water heater that has a first law efficiency of at least 880
design a benchtop apparatus that illustrates the basic principles of a mixing heat exchangeryou may use either liquids
example contains a situation involving a large steam turbine using the data provided there and assuming the values of