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A 25-hp 240-V 77.8-A shunt motor has an armature resstence of 0.083 Ohm's and a field-circuit resistance of 125 Ohm's. Calculate the copper losses when the motor is operating ar rated conditions.
Steam at 1000kPa and 300deg C expands to a pressure of 150kPa in a cylinder. If PV = constant during the process, calculate W, Q and delta S for the process.
Air expands isentropically from 1.5 MPa and 60 C (centigrade) to 0.4 Mpa. Calculate the ratio of the initial to final speed of sound.
What is the primary difference between the strength of a structure and the strength of a material? Is a strong material stiff?
a timber company wishes to increases sales of timber by supplying log cabin kits that can be assemed and used as
liquid waterh2o at 200 kpa and 20oc is heated in a chmaber by mixing it with a steam h20 at 200 kpa and 150oc. the
The bent rod ABDE is supported by ball-and- socket joint at A and E and by the cable DF. If a 600-N load is applied at C as shown , determine the tension in the cable.
what is the flow rate required to cool and maintain 0.5 x 0.5 x 0.5 m3 volume of air at 297 K to 199 K, using nitrogen at 199 K
the hydrogen spectrum has a red line at 656 nm and a blue line at 434 nm. what is the firstnbsporder angular
Calculate the concentration (in weight percent) of molybdenum that must be added to tungsten to yield an alloy that contains 1.51 x 1022 Mo atoms per cubic centimeter.
a horizontal pipe has an abrupt expansion from d1 8 cm to d2 16 cm. the water velocity in thenbspsmaller pipe is 15
a system consists of nitrogen n2 in a piston-cylinder assembly initially at p1 20 lbfin2 and occupying a volume of
a stream of methanol vapor is used to chill a countercurrently flowing saturated steam in an adiabatic heat exchanger.
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