Engineering, 05.05.2020 17:38, silas99
A 10kW, 400 V, 3-phase, 6-pole, 50 Hz slip ring induction motor has a maximum torque equal to twice the full load torque at a slip of 20%, with slip rings short circuited. Neglecting stator resistance and rotational losses, determine the slip at full load, starting torque and torque developed at a slip of 0.25. If the rotor circuit resistance is increased to four times by connecting resistance in series with each rotor slip ring, determine, (a) the slip at maximum torque, (b) the slip at which the motor will develop the same full load torque (c) the starting torque.
Answers: 1
Engineering, 04.07.2019 18:10, oshawn108
Ahot wire operates at a temperature of 200°c while the air temperature is 20°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 (200°c20°c)/2 = 110°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 18:10, mamasbug4285
An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0
Answers: 3
A 10kW, 400 V, 3-phase, 6-pole, 50 Hz slip ring induction motor has a maximum torque equal to twice...
English, 04.03.2022 15:00
Chemistry, 04.03.2022 15:10