Need help solving these and finding the right answer.
Need help solving these and finding the right answer. 28. A 3600 rpm DC series motor...
A 8250 w shunt DC motor has a terminal voltage of 300 V. A field resistance Rf of 40 Ω, and an armature resistance Ra of 250 mm2. The field winding has 1500 turns. An adjustable resistance Rad is connected in series to the field winding. Rad is set at 20 Ω, but it can vary from 0 to 80 Ω. The magnetization curve is shown in Figure.1 and it is taken at a speed of 1200 rpm. (Armature reaction...
A 250-V shunt-connected DC motor runs at 1500 rpm when it is not connected to any external load. When the motor is connected to an external load, it draws a line current of 40A. The motor has an armature resistance of 1 ? and a field circuit resistance of 100 ?. Assume that the rotational loss torque is 2 Nm and is independent of the speed (a) Find the line current of the motor when there is no external load....
Q1 [35] DC shunt motor has the following parameters: 10,1 kW, 150 V, 805 rpm, R=0.212, R=200 2. When the motor is not loaded it draws 10 A from the voltage source of 150 V. a) [10]Calculate the efficiency at full load, rotating at 805 rpm. b) [10] Calculate the torque when there is no load on the rotor. c) [15] If total torque on the rotor is 91 Nm, calculate the control resistance of the armature to set the...
A 220 V DC shunt motor has an armature resistance, Re-0.1 S2, a field resistance, Ry=100 12, and negligible rotational losses. Under certain load conditions, the shunt motor runs at 1600 rpm while drawing a total current, I = 100 A. Determine: a. the output power of the motor; b. the output torque in N-m; and, c. the efficiency Without making any changes to the applied voltage or the field, the motor operates with a new M mechanical load that...
Question: An eight-pole, 25 kW, 120 V DC generator has a duplex lap-wound armature, which has 64 coils with 16 turns per coil. Its rated speed is 2400 rpm.(a) Define a duplex lap-wound DC armature. (b) How much flux per pole is required to produce the rated voltage in this generator at no load conditions? (c) What is the induced torque in this machine at rated load? (d) Determine path current in the armature of this generator at the rated load? ...