Homework Answers
Add Answer to:
Calculate the parameters of 3-Ph induction motor when it runs at No-Load for the given input...
3. The following measurements have been performed through the open-circuit test of a 15 kVA, 2300/230...
3. The following measurements have been performed through the open-circuit test of a 15 kVA, 2300/230 V transformer: Voc 2300 V,loc 0.21 A, Poc 50 W, What parameters can be calculated through the open-circuit test of a transformer? Calculate the parameter values from the given data. (The equivalent circuit of a transformer is very similar to that of the induction motor shown above. The only differences are that there is no slip term's' and there is a resistance Rc representing...
Additional Tutorial Question 1 An electric motor that runs at 2160r/min when driving a load, requires...
Additional Tutorial Question 1 An electric motor that runs at 2160r/min when driving a load, requires a torque of 450Nm. The input to the motor is 115kW. The load is maintained for four hours. 1.1 Calculate the efficiency of the motor. (6) Calculate the energy consumed by the motor in kWh. (3) 1.3 Calculate the cost of the energy consumed by the motor. Assume the cost of electrical energy to be 74/kWh. (3) [12]
Problem # 3: Induction Motor Analysis [30 points] The parameters of the per phase equivalent circuit...
Problem # 3: Induction Motor Analysis [30 points] The parameters of the per phase equivalent circuit of a three phase wye-connected, 220 V (line- line, rms) 10 hp, 60 Hz, six-pole induction motor are given as: Ri = 0.3 Ohm, R2-0.15 Ohm, Xi-0.5 Ohms, X2= 0.2 Ohm, Xm-15.0 The total friction, windage and core losses add up to be a constant of 400 W. For a slip of 0.025 with motor operating at rated frequency and stator voltage, calculate the...
3, A 34, 400-V 50-Hz induction motor takes 4 times the full-load current and develops twice the f...
3, A 34, 400-V 50-Hz induction motor takes 4 times the full-load current and develops twice the full- load torque when direct-switched to 400-V supply. Calculate in terms of full-load values (a) the line curent, the motor current and starting torque when started by an auto-starter with 50% tap and (b) the voltage that has to be applied and the motor current, if it is desired to obtain full-load torque on (a) 100%, 200%, 50% (b) 228 V, 282%) starting...
1. A three phase, 60 Hz, 100-hp, 440V, Y-connected induction motor runs at 864 rpm when...
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.
QUESTION 2 [25 MARKS] a) Describe what will happen to the induction motor when the rotor...
QUESTION 2 [25 MARKS] a) Describe what will happen to the induction motor when the rotor speed is the same as the rotating magnetic field speed. 15 MARKS b) The following data in Table 2 was obtained from the no-load test, locked rotor test and DC test of a three-phase delta-connected, 450 V, 2-pole, 60 Hz, wound-rotor induction motor. The locked rotor test was done at 15Hz. No-load test Vyt = 450 V Ini - 30 A PNL-4.6 kW Table...
QUESTION 2 [25 MARKS] a) Describe what will happen to the induction motor when the rotor...
QUESTION 2 [25 MARKS] a) Describe what will happen to the induction motor when the rotor speed is the same as the rotating magnetic field speed. [5 MARKS] The following data in Table 2 was obtained from the no-load test, locked rotor test and DC test of a three-phase delta-connected, 450 V, 2-pole, 60 Hz, wound-rotor induction motor. The locked rotor test was done at 15Hz. b) Table 2 No-load test Locked rotor test DC test VNL = 450 V...
how do we calculate ii and iii) - induction motor (25 marks) QUESTION 3 A three-phase,...
how do we calculate ii and iii) - induction motor
(25 marks) QUESTION 3 A three-phase, 400 V, 50 Hz, 4-pole, 1370 rpm, star connected, squirrei-cage induction motor has the following parameters: R, 20, R2- 3 Q, X1-X2- 3.5 and Xm=40 .Motor is controlled by a voltage source inverter at constant V/f ratio. By using IEEE equivalent circuit; Calculate the starting torque and starting current at 10 Hz To- If the torque-speed to be a straight line calculate the slip...
Help ASAP #3. A 3-phase, 220 V, 4-pole, 60 Hz induction motor has the following parameters...
Help ASAP
#3. A 3-phase, 220 V, 4-pole, 60 Hz induction motor has the following parameters referred to (jDraw the equivalent circuit of the motor. Find (0) the motor speed (l) the input current (iii) The input power factor (iv) the motor torque (v) the efficiency of the motor.
A 3 phase, 460V, 60Hz, 6-pole induction motor has the following equivalent circuit parameters per phase:...
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:...
3. The following measurements have been performed through the open-circuit test of a 15 kVA, 2300/230 V transformer: Voc 2300 V,loc 0.21 A, Poc 50 W, What parameters can be calculated through the open-circuit test of a transformer? Calculate the parameter values from the given data. (The equivalent circuit of a transformer is very similar to that of the induction motor shown above. The only differences are that there is no slip term's' and there is a resistance Rc representing...
Additional Tutorial Question 1 An electric motor that runs at 2160r/min when driving a load, requires a torque of 450Nm. The input to the motor is 115kW. The load is maintained for four hours. 1.1 Calculate the efficiency of the motor. (6) Calculate the energy consumed by the motor in kWh. (3) 1.3 Calculate the cost of the energy consumed by the motor. Assume the cost of electrical energy to be 74/kWh. (3) [12]
Problem # 3: Induction Motor Analysis [30 points] The parameters of the per phase equivalent circuit of a three phase wye-connected, 220 V (line- line, rms) 10 hp, 60 Hz, six-pole induction motor are given as: Ri = 0.3 Ohm, R2-0.15 Ohm, Xi-0.5 Ohms, X2= 0.2 Ohm, Xm-15.0 The total friction, windage and core losses add up to be a constant of 400 W. For a slip of 0.025 with motor operating at rated frequency and stator voltage, calculate the...
3, A 34, 400-V 50-Hz induction motor takes 4 times the full-load current and develops twice the full- load torque when direct-switched to 400-V supply. Calculate in terms of full-load values (a) the line curent, the motor current and starting torque when started by an auto-starter with 50% tap and (b) the voltage that has to be applied and the motor current, if it is desired to obtain full-load torque on (a) 100%, 200%, 50% (b) 228 V, 282%) starting...
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.
QUESTION 2 [25 MARKS] a) Describe what will happen to the induction motor when the rotor speed is the same as the rotating magnetic field speed. 15 MARKS b) The following data in Table 2 was obtained from the no-load test, locked rotor test and DC test of a three-phase delta-connected, 450 V, 2-pole, 60 Hz, wound-rotor induction motor. The locked rotor test was done at 15Hz. No-load test Vyt = 450 V Ini - 30 A PNL-4.6 kW Table...
QUESTION 2 [25 MARKS] a) Describe what will happen to the induction motor when the rotor speed is the same as the rotating magnetic field speed. [5 MARKS] The following data in Table 2 was obtained from the no-load test, locked rotor test and DC test of a three-phase delta-connected, 450 V, 2-pole, 60 Hz, wound-rotor induction motor. The locked rotor test was done at 15Hz. b) Table 2 No-load test Locked rotor test DC test VNL = 450 V...
how do we calculate ii and iii) - induction motor
(25 marks) QUESTION 3 A three-phase, 400 V, 50 Hz, 4-pole, 1370 rpm, star connected, squirrei-cage induction motor has the following parameters: R, 20, R2- 3 Q, X1-X2- 3.5 and Xm=40 .Motor is controlled by a voltage source inverter at constant V/f ratio. By using IEEE equivalent circuit; Calculate the starting torque and starting current at 10 Hz To- If the torque-speed to be a straight line calculate the slip...
Help ASAP
#3. A 3-phase, 220 V, 4-pole, 60 Hz induction motor has the following parameters referred to (jDraw the equivalent circuit of the motor. Find (0) the motor speed (l) the input current (iii) The input power factor (iv) the motor torque (v) the efficiency of the motor.
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago