Engineering, 05.12.2019 18:31 TheMixingToad

Athree-phase, y-connected, 460-v, 60-hz, 8-pole, wound-rotor induction motor has the following parameters at standstill: rotor impedance is 0.22 + j0.53 ω/phase and negligible stator impedance. determine the breakdown slip the breakdown torque the power developed at breakdown slip the starting torque the resistance that must be inserted in series with the rotor circuit so that the starting torque is 50% of the maximum torque.

Answers: 2

Show answers

Another question on Engineering

Engineering, 04.07.2019 18:10

What difference(s) did you notice using a pneumatic circuit over hydraulic circuit.explain why the pneumatic piston stumbles when it hits an obstacle.

Answers: 2

Answer

Engineering, 04.07.2019 18:20

An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid

Answers: 3

Answer

Engineering, 04.07.2019 19:20

Apreheater involves the use of condensing steam at 100°c on the inside of a bank of tubes to heat air that enters at 1 atm and 25°c. the air moves at 5 m/s in cross flow over the tubes. each tube is 1 m long and has an outside diameter of 10 mm. what is the minimum value of nl needed to achieve an outlet temperature of t 75 c? what is the corresponding pressure drop across the tube bank?

Answers: 3

Answer

Engineering, 06.07.2019 02:30

A12 mm diameter shaft runs in a plain cylindrical bush 30 mm long that is located in an 18 mm diameter hole in a housing. the shaft-inner bush fit is h8 f and the outer bush-housing fit is h7-p6. make a fully cimensioned sketch of the bush with tolerances. find the maximum and minimum clearance or interference for both fits on the inner and outer diameters of the bush

Answers: 3

Answer

You know the right answer?

Athree-phase, y-connected, 460-v, 60-hz, 8-pole, wound-rotor induction motor has the following param...

Questions