Answered: Induction motor speed control technique…

Induction motor speed control technique with bad torque response to sudden changes is O V-F control O V-I control O stator voltage control O slip power control

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 17RQ

See similar textbooks

Related questions

Q: 3. A 6-pole, 3-phase, 50 Hz induction motor has a rotor resistance of 0-02 2/phase and standstill…

Q: A 4-pole, 3-phase , 50 Hz induction motor has a rotor resistance of 0.022 per phase and standsti…

Q: A 4-pole induction motor is fed with a 230 V, 50 Hz supply and is running at no load. Answer the…

A: (i) The synchronous speed of the induction motor is given as: Ns=120fPf=frequencyP=number of poles…

Q: A 10-hp,4 pole,25Hz,3-phase induction motor is taking 9100 watts from the line.Core loss is 290…

Q: 8. Between no-load and full-load, . motor develops the least torque (a) series (b) shunt (c)…

A: As per the guidelines of Bartley we supposed to answer first three subpart only.

Q: -- pole Soo V Shmat motor takes 7A on-ho.Lood, the no- ood speedbeing 750x.pm. It has ashunt field…

A: Back EMF = terminal voltage - voltage drop in the armature resistance - brush contact drop. Back emf…

Q: b) A three-phase, 50 Hz, six pole induction motor runs at a no-load speed of 915 r/min. and…

A: The solution can be achieved as follows.

Q: A 4-pole, 650v shunt motor has 720 wave connected conductors on its armature, The full-load armature…

A: Option C

Q: (b) A three-phase, 50 Hz, four poles induction motor runs at a no-load speed of 1350 r/min and…

Q: 1. The distance of air gap between stator and rotor range from ------- to depend on Motor's power.…

Q: In In Star-Delta Starting of 3-Phase Induction Motor Why we do not have the motor continue running…

A: During starting of induction motor, the machine draws very heavy current at the time of starting.…

Q: A 220 V DC Shunt Motor takes 3A at no load.it draws 35A when running at full load at 2000r.p.m. The…

A: In this question, Find the no load speed of thr DC shunt motor? If full load speed = 2000rpm

Q: hase, 50 Hz, four poles induction motor runs at a no-load speed of 1350 r/min and full-load speed is…

Q: Induction motor speed control technique with bad torque response to sudden changes is O V-F control…

A: Induction motor speed control technique with bad torque response to sudden changes is

Q: s the following correct? True or false? If the rotor of the asynchronous motor is reversed in the…

A: A 3-ϕ asynchronous motor's rotational direction can be reversed by switching any two of the three…

Q: 12 Why does DC motor sometimes run too fast when under-loaded? * O Due to high line voltage O all of…

A: Q. Why does DC motor sometimes run too fast when under-loaded? Ans. Due to weak field Explanation…

Q: Q-2:- A30, 460 V, 100 hp, 60 Hz, four-pole induction motor delivers rated output power at slip of…

A: Since you have asked multiple questions in a single request, we will be answering only the first…

Q: A six pole, 3 - 0, 50 Hz induction motor has a rotor resistance and rotor reactance c 0.02 Q and…

Q: 9-6:- Choose the right answer: 1. The distance of air gap between stator and rotor range from to…

Q: 14/ If the star-connected rotor winding of a 3-phase induction motor has a resistance of 0.010per…

A: The solution is given below

Q: 4-22-A three-phase, 12-pole, 60-Hz-, 2200-V induction motor runs at no-load with rated voltage and…

Q: In a 3-phase, slip-ring induction motor, the open circuit voltage across slip-rings is measured to…

Q: Calculate the steps in a 5-section rotor starter induction motor. for a 3-phase Maximum starting…

Q: A 250-V shunt motor runs at 1500rpm at no-load and takes 8A. The total armature and shunt field…

A: To calculate tha speed of shunt motor when it is loaded Assuming flux is constant

Q: Startup torque of a synchronous motor would be: O A. Start up current is the problem not the torque…

A: The solution is given below

Q: the speed of a DC servo-disc motor can be varied by adjusting the aplied voltage's amount of off-or…

A: Yes. The given statement is true. The speed of dc servo motor varies with magnitude of the…

Q: The resistance and standstill reactance of each phase of a 3-phase induction motor with star-…

Q: 4) It is advisable to avoid line-starting of induction motor and use starter because: A. motor takes…

A: 4. At starting slip is 1 , so rotor impedance is very very less . So , if we apply such a line…

Q: 2-The speed of a slip-ring induction motor cannot be controlled by: (a) Rotor resistance control.…

A: B)pole changing method We can control the speed of induction motor with help of rotor resistance and…

Q: Calculate the torque developed per phase for a 6-pole, 60 Hz, 3-phase induction motor at a slip of…

Q: A switched reluctance motor has salient poles on ..................... a. neither stator or rotor b.…

A: Option B: A switched reluctance motor has salient poles on both the stator and the rotor A Switched…

Q: Question 9 A 12-pole, 3-phase, 60 Hz induction motor runs at 475 rev/min. Slip speed is Not yet…

A: Given data F = 60 P= 12

Q: Which of the following type of induction motor torque and slip can be changed easily? a. Non Salient…

A: In this question , we will write about induction motor in which torque can be changes easily....

Q: The standstill reactance of each phase of a three-phase induction motor with star-connected rotor…

A: Working principal When an AC supply is given to the stator of the Induction motor, it generates a…

Q: Starting torque of induction motor is less than that of a. DC shunt motor b. AC series motor c. DC…

A: Dc series motor has highest starting torque compare to all motors. Therefore starting torque of…

Q: 11.a. If an a-c system requires a 250-hp motor to drive a machine at a uniform rate of speed, what…

A: 11.a. Synchronous motor is the motor which provides uniform speed. So when an AC system required to…

Q: 3. A 4-pole wound- rotor induction motor has a Wye connected stator and a Delta connected rotor with…

Q: A 12 pole, 50 Hz, 3 phase induction motor has rotor resistance of 0.12 ohm and standstill reactance…

A: We have an 3-phase induction motor having, Poles (P) = 12 frequency (f) = 50 Hz Rotor resistance…

Q: 5-Which of the following statements regarding single phase induction motors correct? (a) It requires…

Q: (a) A 25 hp, 320 V, 50 Hz, five-pole, Y-connected induction motor has a full load slip of 5%.…

A: Note: As per our policy we can solve only 3 sub-parts of one question, please reupload remaining…

Q: f. An induction motor is running at the rated conditions. If the shaft load is now increased, how do…

A: If the shaft load of the induction motor is increased then how other quantities change ?

Q: Q4/ A 500 h.p., 3-phase , 440 V, 50 Hz induction motor has a speed of 950 r.p.m. on full-load. The…

Q: A 3 phase 4 pole 400 volt 50 Hz induction motor is operating with slip 0.03. What is value of speed…

A: Given: A 3-phase 400 V induction motor having P=4f=50 Hzs=0.03

Q: A six pole, 3-0, 50 Hz induction motor has a rotor resistance and rotor reactance of 0.02 Q and 0.13…

A: In starting the torque is 75% of the maximum torque, hence, the ratio of them will be 0.75. The…

Q: A three phase, 50 Hz, 4 pole slip ring induction motor runs at 1455 rpm on full load. The rotor…

A: Given, f=50 HzP=4Nr=1455 rpmR2phase=0.2 Ω

Q: 1- Which of the following motor is required to be started on load? a) Synchronous motor. b) DC…

A: Solution 1 ) DC series motor Dc series motor always started on load.

Q: Three phase induction motor Leakage Reactance five times Resistance for stator and rotor and…

A: Three phase induction motor Leakage Reactance five times Resistance for stator and rotor and…

Q: Starters are used in induction motor because It can not run in reverse direction It is run against…

A: In this question we need to choose a correct option

Q: Induction motor speed control technique which is not recommended to be used at low speed is O V-I…

A: V-F control

Q: 24/ The resistance and standstill reactance of each phase of a 3-phase induction motor with star-…

Question

Solve it fast fast plz

Induction motor speed control technique with bad torque response to sudden changes is
O V-F control
O V-I control
O stator voltage control
O slip power control

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

VIEW

Step 2

VIEW

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

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 220 V DC shunt motor takes 3 A at no-load. It draws 25 a when running at full load at 1500 rpm. The armature and shunt resistances are 0.5 ohm and 220 ohm, respectively. the no-load speed in rpm is _______.
A switched reluctance motor has salient poles on ..................... a. neither stator or rotor b. Stator and rotor c. Rotor only d. Stator only
33.a. The maximum torque a motor can produce is called theA. locked-rotor torque.B. full-load torque.C. saturation torque.D. breakdown torque.33.b. An a-c motor operating at a power-line frequency of 60 Hz has a synchronous speed of 900 rpm. Thenumber of poles in this motor iA. 12B. 4C. 6D. 8
A shunt motor has lap-wound armature with 100 slots with 2 turns per coil. It is rotating at 100rpm. Flux per pole is 100mWb. Armature resistance is 1Ω and field resistance is 90Ω. Output mechanical power is 200W. Draw the circuit diagram and determine the efficiency of the motor. Ignore all friction and iron losses
A 25 hp 240 V shunt motor draws 88.5 A when delivering rated load. The armature resistance of the motor is 0.17 02, and the shunt-field resistance is 105 2. Determine (i) motor efficiency and (ii) rotational losses (core plus stray power).
Two induction motors are cascaded for the purpose of speed control. The main motor has 6 poles and the other motor has 4 poles. Calculate the possible speed that can be obtained if the set is run on a supply of 50 Hz frequency. (Ans: 3000 rpm, 1500 rpm, 1000 rpm & 600 rpm)
PLEASE ANSWER IT IMMEDIATELY. A 200 V dc shunt motor takes 20 A at rated voltage and runs at 1000 rpm.Its armature resistance is 0.1 ohm. Calculate the value of additionalresistance required in the armature circuit to reduce the speed to 800 rpmwhen the load torque is independent of the speed.
17.A. The arrangement which can NOT be used to control the speed of a universal motor operating from a dc circuit isA. an adjustable external resistance.B. a tapped field winding.C. a solid-state controller. 17.B. A single-phase a-c motor which has both a squirrel-cage winding and regular windings but lacks a shortcircuiter is called aA. conductively compensated repulsion motor.B. repulsion-start motor.C. straight repulsion motor.
A 4 pole, 500V shunt motor has 720 wave connected conductors on its armature. The full load armature current is 60A and flux per pole is 0.03Wb. The armature resistance is 0.2Ω and contact drop per brush is 1V. What is the back emf? What is the developed torque?
Calculate the steps in a 4 section rotor resistance starter for a 3-phase slipring induction motor having full load slip 2.5 %. Maximum starting current = full load current and rotor resistance/phase 0.02 Ω
A shunt motor has a nameplate rating of 140 hp, 500 V, 205 A, 1700 rpm. The shunt field circuit resistance is 280 ohms, and the resistance of the complete armature circuit is 0.17 ohms. Calculate the stray losses.