DeterminePer unit slipLine current at startingStarting torquePull out torque A 420 V, three-phase 60 Hz, star connected, induction machine has the following parameters:Rs = 0.15 Ohms, Rr= 0.25 Ohms, Xls =0.8 Ohms, Xlr = 1.3 Ohms, the rated speed is 1,755 rpm. The magnetisingbranch can be neglected along with the mechanical and iron losses.

Answered: Image /qna-images/answer/43f1a341-d617-4060-a529-79ad17f246d4.jpg

420 V, three-phase 60 Hz, star connected, induction machine has the following parameters: = 0.15 Ohms, Rr= 0.25 Ohms, Xls =0.8 Ohms, Xlr = 1.3 Ohms, the rated speed is 1,755 rpm. The magnetising anch can be neglected along with the mechanical and iron losses.

420 V, three-phase 60 Hz, star connected, induction machine has the following parameters: = 0.15 Ohms, Rr= 0.25 Ohms, Xls =0.8 Ohms, Xlr = 1.3 Ohms, the rated speed is 1,755 rpm. The magnetising anch can be neglected along with the mechanical and iron losses.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter8: Basic Electric Motors

Section: Chapter Questions

Problem 28RQ: What are the advantages and disadvantages of using the following types of motors? shaded-pole...

See similar textbooks

Related questions

Q: power transmission based on the given function.

A: Transformer- A device that transfers the electrical energy between two electrical circuits which are…

Q: a. Find the necessary KVI/KCI. equations to solve the problem. b. Compute for 1₁, 12, and I ( c.…

A: Note: As per the rules we can answer only 3 sub-parts, please post the remaining sub-parts as the…

Q: What is the inductor current if VL is 500 sin(50t + 20°)? 5 sin(50t - 70°) 5 sin(50t + 20°) 5…

Q: Convert decimal number 33 into BCD. O 00111011 O 01110011 O 00110010 00110011

A: Given data, The decimal number is 33

Q: If V = OV, find Vo. Rb 2 Rc Rc +5V m Q1 Answer: If VOH = 3V, find VIL. (RC = 1k, Rb = 10k. Assume…

A: This question is belongs to transister switching circuits Assumption: Vbe=0.7v

Q: 1.) Determine the discrete-time Fourier transform of the signal x[n]=(0.5)n−2u[n−1]

A: Since both question are not interlinked as per the guidelines of Bartley we supposed to answer first…

Q: Given the circuit below, compute for the following, (fin = 60Hz) a. Peak to peak ripple b. Filtered…

A: In this question, We need to determine the peak to peak ripple voltage and filtered dc value? We…

Q: Given the circuit below, find the minimum and maximum output voltage after the filter capacitor,…

A: The circuit can be redrawn as Time constant of the circuit will beζ=1.2k×10mζ=12secTime period of…

Q: Eight resistances [identical] are connected in series across 220-V line a. Identify the voltaege…

Q: diode? Under what circumstances does the output voltage remain constant in a limiter circuit with…

A: The zener diode is the diode that works in the reverse bias. The zener diode with the limiter…

Q: R=10Ω ZT E Ο 10 Ω - j 12 Ω Ο 10 Ω - j 2 Ω 10 Ω - j 24 Ω 10 Ω + j 12 Ω 4 Ω

A: In this question we will find total impedance...

Q: 37. A 3 Q resistor having 2 A current will dissipate the power of (a) 2 watts (b) 4 watts (c) 6…

A: A 3 Q resistor having 2 A current will dissipate the power of

Q: QUESTION 10: The circuit to be designed in the following figure has the bias voltage of V* = 4.5 V…

Q: 11.47 In a three-phase balanced delta-delta system, the source has an abc-phase sequence. The line…

Q: 1. Given the following transfer function: s+2 Y(s) X(s) = G(s) = s² +2s +3 f. What is the output…

Q: can you give a expanded solution on how you solve eq 1,2, and 3?

A: After applying KVL in the meshes, we get the following set of 3 independent equations:…

Q: True or False: The relationship within a channel between amplitude and frequency is referred to as…

A: Note- As per the policy, we can solve only one question, please upload the remaining question as…

Q: 2- Find the efficiency of a 150 kVA transformer at 25 % full load at 0.8 p.f. lag if the copper loss…

A: Given, kVA rating, S = 150 kVA Factor of load, x = 25 % = 0.25 Power factor, cosϕ=0.8 Copper loss,…

Q: QUESTION 4: Consider an idealized class-B output stage shown below. The output stage is to deliver…

A: Given Consider an idealized class-B output stage shown below. The output stage is to deliver 42 W of…

Q: 2. According to the principle of log-scales, if the ratio between two points is same, then the…

A: Note: As per the policy we can solve only one question, please re-upload the remaining question as a…

Q: 10/0° v www 402 ww 852 C √2.2 ww 2/-90⁰ A J6 -√³52 T b MA ·106 Jon

Q: 1. Given the following transfer function: Y(s) s+2 = G(s): = X(s) s²+2s +3 a. What are the zeros of…

A: In this question, We need to determine the open loops zeros and poles, also find the damping ratio…

Q: Q3: For the Single Line Diagram shown below, draw the reactance diagram and specify all reactance in…

A: In this question , We need to draw the single line diagram of the given circuit for the given…

Q: Determine the characteristic impedance of a transmission line which has a capacitance of 30pF/m and…

Q: A 10-KVA, 500/250-V, single-phase transformer has its maximum efficiency of 94 % when delivering 90…

Q: Calculate the reactive power consumed by the circuit coil shown in the figure in front of you

Q: 11.43 In a three-phase balanced system, a delta-connected source supplies power to a wye-connected…

Q: consider the following LTI discrete-time system; y[n]=y[n-1]-0.21y[n-2]+3x[n]+2x[n-2]. find zero…

A: The solution is given below

Q: E1 30 VAC 20 R1 SQ XC-20 L1 XL-3Q C2 XC-452 R2 E2 40 VAC 260

A: Given circuit is shown below.

Q: Find the magnetic field intensity at the origin due to current of 10A in the conductor shown in…

Q: (a) A system has a transfer function 1 G = (1 + ST1)(1+ ST2)' where 71 = 0.1s and 72 = 10-³s. Make a…

Q: R1 SQ L1 XL-3Q R2 www. 60 E1 30 VAC 20 XC-20 XC-452 Find the individual currents using the following…

A: Given: Consider the following circuit: To find: The individual currents use the following…

Q: 3. A 300 loop coil with a cross sectional area of 8.0 cm² carries a current of 1.2 A in a magnetic…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: A capacitor of capacitance 2 uF is charged to a potential difference of 200 V. After disconnecting…

Q: - A OO MOVABLE ARM (WIPER) OB If the above potentiometer is rated for 10 kohm and the resistance…

Q: what is the benefits in power system of defining vector group of 3 phase transformer. ..

A: Vector group: Vector groups provide information about the winding of the high voltage side and low…

Q: R₁ Hilt V1 30V R23 V1 30V Hilt PR4 0 PR4 1.0000A 171.43mA PR1 PR1 v 30.000V v 20.000V v 10.000V R1…

A: Given five multisim circuits of different combinations of resistors ,we need to evaluate equivalent…

Q: 10.2 A universal series motor has a resistance ctance connected to a 220 V DC supply and loaded to…

Q: ww 751 01 U10+ 40 kQ 731 02 351 02 Z UA. A 108 8.00 Vo Solve for i, -

A: given here a op amp circuit and asked to find the i0 in the circuit. here nothing is mentioned about…

Q: - A OC MOVABLE ARM (WIPER) ов If the above potentiometer is rated for 10 kohm and the resistance…

A: Given, Potentio-meter is rated 10 kΩ Resistance between B and C terminal is RBC=2 kΩ

Q: Q1// Si transistor to be used in cct. Shown below has a current gain ß that varies from 50 to 200 if…

Q: a. what is the charge voltage across the capacitor in figure a? b. what is the stable voltage range…

A: We need to find out charge and range for output voltage .

Q: In a balanced three-phase system, the source is a balanced wye with an abc-phase sequence and…

Q: For the next 3 questions, consider the circuit below. VTH = 4V and k = 1 mA/V² +12V Vo 100 viam If…

Q: Q3) Evaluate each sides of Stokes theorem for . <4 1050 (2T a region Z=0, OK KY if H = 31 a&

A: We need to evaluate each side of Stoke's theorem for a region z=0, 0≤ρ≤4 , 0≤ϕ≤2π , if H=3ρ aϕ.…

Q: For the x(t) signal shown below, make the relevant drawings in the coordinate plane. x(t) 3 a.…

A: As per our company guidelines we are supposed to answer only first 3 subpart kindly repost the other…

Q: Construct the equivalent NAND-NAND circuit of the given Boolean function, F=B'(CD'+A) + C'D(A'+B)

Q: Data Simulated Data Simulated i Simulated V Computed Data Faculty of Engineering Computed i i,…

Q: The Full load. Cu loss and iron loss of a transformer are 920 W and 430 W respectively. (i)…

Q: 3- At full-load, the Cu and iron losses in a 100-kVA transformer are each equal to 2.5 kW. Find the…

A: Steps: Find the loading percentage according to given load and full load. Then calculate cu loss…

Concept explainers

Types of Braking

A brake is a mechanical device that absorbs energy from a moving system and inhibits its motion. It helps to slow or stop a moving vehicle, axle, wheel, etc. The braking system uses friction between two types of surfaces that are pressed together that convert kinetic energy into heat energy. For instance, we know that in the case of regenerative braking, the brakes convert energy into electrical energy which can be used for later use. The conversion of kinetic heat energy into potential energy is stored in the form of pressurized oil or air. In the brake disc, oil, or fin, the eddy current brakes convert kinetic energy into the electric current with the help of a magnetic field which is converted into heat.Generally, such braking systems apply to the moving axles of wheels. They may also take other forms like moving fluids' surface. In the case of drag racing cars, both wheel brakes are used whereas in parachute or airplanes, both wheel brakes or drag flaps raised in to the air are used.

Question

Determine

Per unit slip
Line current at starting
Starting torque
Pull out torque

A 420 V, three-phase 60 Hz, star connected, induction machine has the following parameters:
Rs = 0.15 Ohms, Rr= 0.25 Ohms, Xls =0.8 Ohms, Xlr = 1.3 Ohms, the rated speed is 1,755 rpm. The magnetising
branch can be neglected along with the mechanical and iron losses.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Why are different motor connections shown for what appears to be the same motor in the various diagrams in Figure 332? FIG. 332 Typical arrangements for four-speed, three-phase, two-winding motors.
Name three factors that determine the torque produced by an induction motor.
A squirrel-cage induction motor is operating at 1175 RPM and producing a torque of 22 Ib-ft. What is the horsepower output of the motor?
What are the advantages and disadvantages of using the following types of motors? shaded-pole motor PSC motor split-phase motor capacitor-start–capacitor-run motor
A three-phase Y-connected 230-V (line-to-line) 7.5-kW 60-Hz six-pole induction motor has the following parameter values in Ω/phase referred to the stator: R1 = 0.294, R2 = 0.144 X1 = 0.503, X2 = 0.209, Xm = 13.25 The total friction, windage, and core losses may be assumed to be constant at 403 W, independent of load. For a slip of 4 percent, determine: (a) stator current, power factor, (b) output torque and power,(c) efficiency when the motor is operated at rated voltage and frequency, (d) the load component 12 of the stator current, the induced torque Tind, and the converted power Pconv for a slip s= 0.04,(e) the maximum torque and the corresponding speed; and (f) the starting torque Tst and the corresponding stator load current 12 start
3-phase, star-connected, 220 V line to line, 50-Hz, 4-pole induction motor has the following constants in ohm per phase referred to stator. r1 = 0.29, r2 = 0.14, X1 = 0.5, X2 = 0.21 and magnetizing reactance X0 = 13.25 ohms .The total friction windage and core lose may be assumed to be a constant at 400 watts. For a slip of 2 percent calculate: a.)Speed b.)Output, and c.) Stator current of the motor
1.5 A 10‐pole, 380 ‐V, 50 Hz, D‐connected three‐phase induction motor is rotating a quarry belt conveyor. The machine has the following parameters, referred to the stator, on a per phase basis: Stator Parameters Winding Resistance................0.19 Ω ......... Winding Reactance.................1.12 Ω.......... Rotor Parameters Winding Resistance......................0.29 Ω Winding Reactance.....................1.12 Ω Magnetising Reactance................................16.8 Ω Equivalent Core‐loss Resistance....................900 Ω. The friction and windage losses are 320 W. When the motor runs at its rated slip of 2.6 %. Determine: 1.5.1 The stator current. 1.5.2 Estimate the Output torque of the motor under the rated conditions. 1.5.3 The Motor…
Please Do not Designed 15 Kw Please Must Show Given Questions in Design for 11KW Motor . A15 kW, 440 V, 4-pole, 50 Hz, 3-phase induction motor is built with a stator bore 0.25 m and a core length of 0.16. The specific electric loading is 23000 ampere conductors/meter. Using the data of this machine, determine the core dimensions, number of stator slots and number of stator conductors for 11 kW, 460 V, 6 pole, 50 Hz motor. Assume a full-load efficiency of 84% and power factor of 0.82 for each machine.the Winding Factor is 0.955.
3-phase 3730W, 220V, 6-pole and 50 Hz induction motor operates at full load with a slip of 0.025. The sum of the rotational losses including friction + windage losses and other (stray load) losses is 5% of the output power. Find the induced (electromagnetic) moment at full load
A three-phase, two-pole, 35 hp, 480 V, 60 Hz, Y-connected induction motor has the following constants in ohms per phase referred to the stator: Rl = 0.322Ω R2 = 0.196 Ω X1 = 0.675Ω X2 = 0.510Ω Xm = 12.5Ω The total rotational losses are 1850 W and are assumed to be constant. The core loss is lumped in with the rotational losses. For a rotor slip of 3% at the rated voltage and rated frequency, determine the following: (a) The speed in rpm and in rad/s (b) The stator current (c) The power factor (d) The developed power and output power (e) The developed torque and output torque (f) The efficiency.
1.Show that if three phase currents, each of equal magnitude and differing in phase by 120degree, flow in a three phase winding that are 120 degree apart from each other then it willproduce a rotating magnetic field of a fixed magnitude. 2. A three phase, 5-hp, 60Hz, 115V, 4-pole induction motor is operating at rated voltage, rated frequency, and 125 percent rated load has an efficiency of 85.4 percent. The stator conductor loss, rotor copper loss and core loss are 223.2W, 153W, and 114.8W respectively.Sketch the power flow diagram, enter the given data, and determine i) shaft speed ii) shaft torque 3. Can single phase induction motor be self-started? Explain the operation of a split phase single phase induction motor?
A 1100 V, 50 Hz, delta connected induction motor has a star connected slip ring rotor with a phase transformation ratio of 3,8. The rotor resistance and standstil leakage reactance are 0,012 ohm/phase and 0,25 ohm/phase respectively. Neglecting the stator impendance and magnetising current determine the rotor current at 4 % slip with slip rings shorted. A. 123 A B. 430,5 A C. 560 A D. 742,3 A