Engineering, 18.08.2020 17:01, Jonny13Diaz
In a three-phase squirrel-cage induction motor, the rotating magnetic field is produced by:
a. two electromagnets placed at right angle from each other and two sine wave currents phase shifted of 90° from one another.
b. three electromagnets placed at 90° from each other and three sine wave currents phase shifted of 120° from one another.
c. three electromagnets placed at 120° from each other and three sine wave currents phase shifted of 120° from one another.
d. three electromagnets placed at 120° from each other and three sine wave currents phase shifted of 90° from one another.
Answers: 2
Engineering, 04.07.2019 16:10, TheOriginalMeyah
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
Answers: 2
Engineering, 04.07.2019 18:10, niicoleassssssf
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
Answers: 2
Engineering, 04.07.2019 18:10, oliviasoreo92
Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
Answers: 1
Engineering, 04.07.2019 18:20, safiyabrowne7594
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
In a three-phase squirrel-cage induction motor, the rotating magnetic field is produced by:
a. two...
Mathematics, 28.01.2021 18:30
Law, 28.01.2021 18:30
Social Studies, 28.01.2021 18:30
Chemistry, 28.01.2021 18:30