A 4-Pole, 3Ø induction motor operates from a supply whose
frequency is 60Hz. a.)Calculate the speed at which the magnetic
field of the stator is rotating b.) What is the speed of the rotor
when the slip of 0.05
Thank you in advance!!
A 4-Pole, 3Ø induction motor operates from a supply whose frequency is 60Hz. a.)Calculate the speed...
1 a Determine the synchronous speed of a motor that has a frequency of 60Hz and 12 poles. The synchronous speed of a 3-phase, 4-pole induction motor is 60 rev/s. Determine the frequency of the supply to the stator windings. The synchronous speed of a 3-phase induction motor is 25 rev/s and the frequency of the supply to the stator is 50 Hz. Calculate the equivalent number of pairs of poles of the motor. A 6-pole, 3-phase induction motor is...
Problem Solving: 1. A 220V, 4-pole, 60Hz, 1-phase induction motor has an effective rotor resistance and leakage reactance of 0.5 Ohms and 5 ohms respectively. It is running at a speed of 1,800 rpm. Determine: a. Frequencies of forward and backward rotor current components b. Relative magnitudes of forward and backward fluxes. Neglect magnetizing current and stator impedance. A 220-W, 2-pole, 115-V, 60-Hz single-phase induction motor delivers rated output at a slip 10%. The total copper loss at full load...
1. A three phase, 60 Hz, 100-hp, 440V, Y-connected induction motor runs at 864 rpm when it operates at rated load. Calculate the following 1. Number of poles of the machine. 2. slip at full load. 3. Rotor frequency. 4. speed of rotor field with respect to the stator. 5. speed of the rotor magnetic field with respect to the stator magnetic rotating field.
44. The direction of rotation of an induction motor depends on a. the frequency of the input voltage b. the strength of the magnetic field set up c. the phase sequence of the input supply lines and order in which they are connected to the stator windings d. whether the windings are connected in delta or star determines the speed of the rotating magnetic field a. the number of poles in the motor b. the frequency of the supply d...
The induction motor with 4 pole 60Hz is rotating at 1700rpm. 1. What is the speed when the applied voltage rises by 10% (there is no magnetic saturation) 2. What is the speed when the applied voltage drops by 10%? 3. What is the speed when the applied voltage rises by 10% and the load rises by 10%? The answers are 1. 1717rpm 2. 1677rpm 3. 1709rpm
Consider a 2-pole, 3-phase induction machine, with a rated frequency of 60Hz, producing the rated torque at slip s= 3.0percent, when supplied with rated voltages. Under the rated torque condition, calculate the rotor speed wm in rad/s.
A 3 phase, 460V, 60Hz, 6-pole induction motor has the following equivalent circuit parameters per phase: R1 = 0.2 ohms R2 = 0.28 ohms X1 = X2 = 1.055 ohms Xm = 33.9 ohms The no load losses, comprising friction, windage, and iron losses equal 26W. The motor is coupled to a load and connected to a 460V supply, and the rotor speed is found to be 1156 RPM. For this motor connected to a 460V supply calculate the following:...
60Hz, 380V, 4 pole 30kW induction motor, When its driving under full load condition, the speed is 1746rpm, input current 56.2A power factor 90%. Under no-load condition, input current 17.3A, power factor 13.5%. (In full load operation, assume that the mechanical loss is 25% of the total loss and no other losses.) a) Efficiency under full load b) Find a rotor copper loss under full load c) Core loss d) Find a fixed stator copper loss under full load e)...
For full load operation of 60Hz, 380V, 4 pole 30kW induction motor, the speed is 1746rpm, input current 56.2A power factor 90%. In no load operation, input current 17.3A, power factor 13.5%. In full load operation, assume that the mechanical loss is 25% of the total loss and no other losses. a) Iron loss load efficiency b) Find a rotor copper loss under full load c) Iron loss d) Find a fixed automatic hand under full load e) Find the...