A 440-V-rms (line-to-line voltage) three-phase induction motor runs at 1150 rpm driving a load requiring 15 Nm of torque. The line current is 3.4 A rms at a power factor of 80 percent lagging. Find the output power, the power loss, and the efficiency.

A 440-V-rms (line-to-line voltage) three-phase induction motor runs at 1150 rpm driving a load requiring 15 Nm of torque. The line current is 3.4 A rms at a power factor of 80 percent lagging. Find the output power, the power loss, and the efficiency.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 6RQ: Name three factors that determine the torque produced by an induction motor.

See similar textbooks

Related questions

Q: A certain 25-hp three-phase induction motor operates from a 440-V-rms (line-to-line) three-phase…

A: Given values are -

Q: (b) List three methods that can be used to control the speed of DC motors. Explain why one of the…

A: Methods by which we can control the speed of Dc motor are given as follows;• Armature Resistance…

Q: 2. A 50-kW, 440-V, 50-Hz, six-pole induction motor has a slip of 6 percent when operating at…

A: Dear,as per company guidelines we can answer only 3 sub-parts at a time, kindly post other sub-parts…

Q: Derive the speed torque characteristics of induction motor from its equivalent circuit and also…

A: We have given the following problem

Q: The torque–speed curve of a particular 10-pole induction motor is approximately linear for low…

Q: A synchronous motor is running at 75 percent of rated load with unity power factor. If the load…

Q: A 50-kW, 440-V, 50-Hz, six-pole induction motor has a slip of 6 percent when operating at full-load…

Q: Draw the torque speed characteristic of separately excited dc motor showing the effect of changing…

A: steps To find the torque-speed characteristic of separately excited dc motor with the effect of…

Q: 55 A three-phase, two-pole, 400-V (per phase), 60-Hz induction motor develops 37 kW (total) of…

A: Given data: Per phase input voltage, Vph = 400 V. Number of poles, P = 2 Frequency, f = 60 Hz…

Q: A dc shunt motor has a speed-torque equation given by ω=60-12Tm. The motor starts with a load whose…

A: The expression for the load torque is given as: TL=0.1ω2 ⋯1 The expression for…

Q: Example 6.31. A 3-phase, 1455 rpm induction motor drives a load requiring constant torque. In case…

A: Given: 3-phase, 1455 rpm induction motor drives a load requiring constant torque. In case supply…

Q: Problem 4. A two-pole induction motor operates with the following parameters: slip = 5%, total…

Q: electrical machines A 50-kW, 460-V, 50 Hz, two-pole induction motor has a slip of 5% when operating…

A: Note: As per the guide lines of the bartleby we are supposed to solve 3 questions, when they are…

Q: A 40-HP, 230-V., 8-pole, 25 Hz three-phase induction motor is running at 355 rpm at rated load. The…

Q: A four-pole 60-Hz 240-V-rms induction motor operates at 1750 rpm and produces 2 hp of output power.…

A: Given: A induction motor has Poles, P=4 Frequency, f=60 Hz Rated voltage, Vs=240 V Motor speed,…

Q: A certain four-pole 240-V-rms 60-Hz delta-connected three-phase induction motor has Rs=1 ΩRr′=0.5 Ω…

A: Given data: The number of pole is: 4 The value of power supply is: 240 V The expression for the…

Q: (c) Show that the torque-speed characteristic of a series-connected DC motor is given by: KK,V; Taev…

Q: A two-pole 60-Hz induction motor produces an output power of 5 hp at a speed of 3500 rpm. With no…

A: given: P = 2 ; f= 60 Hz ; nm1 = 3500 rmp ; nno load = 3538 rmp ; Tloss = constant Pout = 5 hp…

Q: A 220 V d.c series motor has armature and field resistances of 0.15 2 and 0.10 respectively. It…

Q: A 50-kW, 460-V, 50-Hz, two-pole induction motor has a slip of 5 percent when operating a full-load…

A: Synchronous speed Ns = 120×frequencyNo. of polesRotor speed = (1-slip) ×Synchronous speed Nspower…

Q: A 20-hp, 3-phase, 400-V, 60-Hz 4-pole induction motor delivers full-load at5% slip. The mechanical…

A: Solve for the shaft power. Psh=20 hp=20×746 W=14920 W Solve for the speed of the shaft as,…

Q: A 3-phase, Y-connected, 40 HP, 415 V, 50 Hz, 4-pole wound rotor induction motor has a stator…

Q: We have a six-pole, 440-V-rms, 60-Hz delta-connected synchronous motor operating with a constant…

A: The power developed is proportional to Brsinδ, given power developed is constant so…

Q: An eight-pole 240-V-rms 60-Hz delta-connected synchronous motor operates with a constant developed…

A: Concept: A capacity to do work is called energy and it may exist in potential, kinetic, thermal,…

Q: A 220V DC series motor has armature and series field resistance of 0.2 and 0.1 ohm, respectively.…

Q: A 10-hp six-pole 60-Hz three-phase induction motor runs at 1160 rpm under full-load conditions.…

A: Given data: p=6n=1160 rpmf=60 Hz The expression for the synchronous speed is given as,…

Q: A 50-kW, 460-V, 50-Hz, two-pole induction motor has a slip of 5 percent when operating a full-load…

A: According to the question we have to find the value of shaft speed and induced torque.

Q: A 60-Hz wound-rotor induction motor operates at 40 percent slip with added rotor resistance to…

Q: A shunt-connected dc motor has zero rotational losses and RA=0. Assume that RF+Radj is constant…

A: Expression of output power in terms of output torque Pout=Toutωmωm=PoutTout Speed will be halved due…

Q: A 1-hp 120-V-rms 1740-rpm 60-Hz capacitor-start induction-run motor draws a current of 10.2 A rms at…

A: Given data: V=120 Vn=1740 rpmPoutput=1 hp=746 W The expression for the input power is given as,…

Q: 50-kW, 440-V, 50-Hz, six-pole induction motor has a slip of 6 percent when operating at full-load…

A: A 50-kW, 440-V, 50-Hz, six-pole induction motor slip of 6 percent the friction and windage losses…

Q: A 50-kW, 440-V, 50-Hz, six-pole induction motor has a slip of 6 percent when operating at full-load…

Q: Sketch the torque versus speed characteristic for a series-connected dc motor.

A: The circuit diagram of the DC series motor can be drawn as Thus for constant power motor : Ns α 1Γ…

Q: A certain shunt-connected dc motor has RA=4 Ω and VT=240 V. At a speed of 1000 rpm, the induced…

A: Given data, The value of shunt resistance is RA = 4 Ω. The value of voltage of shunt dc motor is VT…

Q: A 3 phase ,4 Pole, 3300, 50 Hz Connected induction motor, has iden tical Primery and referred…

Q: A 240-V, 100 A armature full-load line current, 1500 RPM, cumulatively-compounded DC motor is…

A: The minimum speed will occur when Radj=50Ω The maximum speed will occur when Radj=450ΩField…

Q: A 25-hp three-phase induction motor operates for a 440-Vrms (line-to-line) three phase source and…

A: We need to find the power loss and efficiency with full load, the input power with no load, and the…

Q: three-phase, 460-V, 60-Hz, four-pole Y-connected induction motor

A: Three Phase Induction Motor A three-phase induction motor is a rotating electrical machine that…

Q: A 480 V, 2-poles, 60 Hz, Y-connected induction motor has an inductive reactance of 4ohm and the…

A: With a rise in coil size or turns, the induced field grows. "Inductance" is the name given to this…

Q: 30 , 600V, 1710 rpm, 50 Hz, Ist = 5.In times of 6 pole squirrel cage induction motor. a) What is the…

A: Given- 3 Phase Induction motor at 50 Hz Voltage= 600 V Speed, Nr = 1710 rpm IstIf=5…

Q: A 50-kW, 440-V, 50-Hz, six-pole induction motor has a slip of 6 percent when op- erating at…

A: A six-pole (P = 6) induction motor has an input of 50 KW with a Supply of 440 V 50 Hz Slip = 6% Here…

Q: 3. A 220 V, 10 kW, 30, 60 Hz, 6-pole induction motor operates at full-load with an efficiency of…

Q: 43. Given: A 250 V DC shunt motor whose armature resistance is 0.6 2 and field resistance is 150 Q.…

Q: A 3-phase and 6-pole asynchronous motor is fed from a 100 Hz source. The engine speed under a…

A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…

Q: A 50-kW, 440-V, 50-Hz, six-pole induction motor has a slip of 6 percent when operating at full-load…

A: Given, A 50 kW, 440 V induction motor. Frequency, f=50 Hz Poles, P=6 Slip, s=6%=0.06 F&W…

Q: A three phase induction motor, 2 poles, for washing machine, is working at full load in spin-dry,…

A: The Induction motors are the asynchronous motor that runs at a speed less than the synchronous. The…

Q: A 220-V Y-connected synchronous motor is drawing 50 A at unity power factor from a 220-V power…

Q: Q1 (a) Sketch the torque-speed profile of DC motor, induction motor, and synchronous motor.

Q: 7-5 A 50-kW. 440-V, 50-Hz, six-pole induction motor has a slip of 6 percent when op- erating at…

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 solution to this questionQ) A 250V, DC series motor has total resistance of 0.8 Ω. Its…

A: A 250 V DC series motor has a total resistance of 0.8 ohms and its full load current be 10A and…

Concept explainers

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.

Question

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

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

200 +21. If maximum torque of an induction motor is kg-m at a slip of 12%, the torque at 6% slip would be...... kg-m. 1 (a) 100 (b) 160 (c) 50 (d) 40 B, 1993)
A four-pole induction motor drives a load at 2500 rpm. This is to be accomplished by using an electronic converter to convert a 400-V dc source into a set of three-phase ac voltages. Find the frequency required for the ac voltages assuming that the slip is 4 percent. The load requires 2 hp. If the dc-to-ac converter has a power efficiency of 88 percent and the motor has a power efficiency of 80 percent, estimate the current taken from the dc source.
A certain 25-hp three-phase induction motor operates from a 440-V-rms (line-to-line) three-phase source and draws a line current of 35 A rms at a power factor of 83 percent lagging under rated full-load conditions. The full-load speed is 1750 rpm. Under no-load conditions, the speed is 1797 rpm, and the line current is 6.5 A rms at a power factor of 30 percent lagging. Find the power loss and efficiency with full load, the input power with no load, and the speed regulation.
• Q5/ in a DC motor. List and describe the types of losses that occur
An induction motor having full load torque of 60 Nm when delta-connected develops a starting torque of 120 Nm. For the same supply voltage, if motor is changed to star -connection, then starting torque developed will be Nm.
A three-phase induction motor is rated at 5 hp, 1760 rpm, with a line-to-line voltage of 220 V rms. The motor has a power factor of 80 percent lagging and an efficiency of 75 percent under full-load conditions. Find the electrical input power absorbed by the motor under full-load conditions. Also, find the rms line current.
2. Describe the Torque-Slip characteristics of a three phase induction motor.
A 4-pole induction motor drives a load at 2500 rpm. This is to be accomplished by using an electronic converter to convert 400 Volts DC into a set of 3-phase AC voltages. Find the frequency required for the AC voltages assuming that the slip is 4 percent. The load requires 2 hp. If the DC-to-AC converter has a power efficiency of 88 percent and the motor has a power efficiency of 80 percent, estimate the current taken from the DC source.
Discuss how the Torque is developed in an Induction Motor.
Draw the typical speed-torque characteristic of the induction motor and expain it.
A 220-V-rms (line-to-line), 60-Hz, three-phase induction motor operates at 3500 rpm while delivering its rated output power of 3 hp. The line current is 8 A rms and the losses are 300 W. Find the input power, power factor, and efficiency.
Q.14. What is slip in an induction motor? Q.15. What is the value of slip at start in an induction motor?