Engineering, 13.03.2020 22:50 meli6552
He following waveforms are measured through a particular device: LaTeX: v(t)= 20\cos(100t+50^{\circ})Vv ( t ) = 20 cos β‘ ( 100 t + 50 β ) V LaTeX: i(t)=15\cos(100t-5^\circ)Ai ( t ) = 15 cos β‘ ( 100 t β 5 β ) A What is the power angle? Submit your answer in degrees, while omitting the unit.
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Engineering, 04.07.2019 18:10
Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.
Answers: 2
Engineering, 04.07.2019 18:10
Ahot wire operates at a temperature of 200Β°c while the air temperature is 20Β°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200Β°c20Β°c)/2 = 110Β°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k
Answers: 2
Engineering, 04.07.2019 18:20
An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40Β°c and pl = 1 .2 mpa. water vapor att2-200Β°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.
Answers: 3
Engineering, 04.07.2019 19:10
What is the chief metrological difference between measuring with a microscope and with an electronic comparator? a. the microscope is limited to small workpieces.a. the microscope is limited to small workpieces. c. the comparator can only examine one point on the workpiece. d. the microscope carries its own standard.
Answers: 1
He following waveforms are measured through a particular device: LaTeX: v(t)= 20\cos(100t+50^{\circ}...
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