Answered: z, four-pole, induction motor connected…

Engineering

Electrical Engineering

z, four-pole, induction motor connected in star

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter35: Harmonics 916

Section: Chapter Questions

Problem 3RQ: Would a positive-rotating harmonic or a negative-rotating harmonic be more harmful to an induction...

See similar textbooks

Related questions

Q: 3. A Superheterodyne receiver uses high side injection. The receiver is to tune the RF range 500kHz…

A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: Consider the circuit shown below. Select values for the capacitances and inductances to obtain a…

Q: 2. Determine the Thevenin's and Norton's equivalent circuits. 20V( 102 () 5A 9어

Q: 1. Calculate v, in the circuit using superposition.

Q: 44. Find the average value of the periodic waveform in Fig. 97. 4i (mA) 20 ---- ,Circular 2m FIG. 97…

Q: Q2: Discuss the fundamenta and the following paths:

Q: A transmitter supplied by 100W power is used with an antenna having a gain of 5dBi. *Calculate the…

Q: 4,1 kQ 20 k2 20 k 20 ka 0.05 uF 10 k2 c0.02 uF

Q: (a) A signal ranges from -20V to + 20 V needs to be acquired with a maximum error of 0.4 mV. In…

Q: The figure below shows an electronic PID controller constructed using OP-AMPS. Determine the values…

A: We need to find out resistance value and resistance ratio for given circuit

Q: What is a oscilloscope ts and what it’s used for?

A: Frequency: Frequency is defined as the number of times a repetitive event occurs per unit of time.…

Q: 10 Which of the following elements belong in transistor level abstraction? (select all that apply)…

A: Following elements are the abstraction level in transistor : 3. Memory : A memory is an abstraction…

Q: #6) For the BJT transistor circuit given below, determine: IB, lc, lE, VCE, and Vce Page | Re Vcc RB…

A: In this question, We need to determine the all known currents and voltage. We know Forward bias…

Q: 1. The cascaded RF filters of a TRF receiver have 590µH inductors. The ganged capacitors vary from…

A: According to the question, The cascaded RF filters of a TRF receiver have 590µH inductors. The…

Q: Calculate the equivalent impedance of a circuit in which a coil of wire having a value of 5/53.2°…

Q: ОP-AMPS Derive the value of Vout in terms of V1, V2, R1, R2, Rf in the circuit below. V1 R1 1k2 1V…

A: In this question, We need to derive the value of Vout in terms of V1, V2, R1 and R2 and Rf .

Q: H.W. Find the current I in the following network: V = 10/20° v (+ ZR = Z, = j2N Zc=-j10 { ZR = 4 0 =…

A: The solution is given below

Q: What are oscilloscope used for?

A: We need to state the use of an oscilloscope.

Q: 2. A TRF receiver is to be designed with a single tuned circuit using a 10µH inductor. The ideal…

A: According to the question,

Q: total charge enclosed in the rectangular parallelepiped

A: Electric field lines are zero inside the perfect conductor. And permittivity of medium is8.854x10-14…

Q: 43. Find the average value of the periodic function of Fig. 96: a. By inspection. b. Through…

A: The average value is the mean value over a complete period.

Q: Analyse, optimise and enhance a sequential logic circuit, making use of Timing Diagrams pls…

A: Sequential logic circuit- It is a circuit whose output is depend on the present input value as well…

Q: transformer is reconnected as a step-down 550/440 V autotransformer. Determine (a) current in the…

A: The solution is given below

Q: X(2) TOn the sequence x(n) = 2" u(-n – 1)-)" u(-n - 1) is- -1,5z (-2)(x

Q: Solve for the current. 50 ) 10 V sine 50 MAGNITUDE ANGLE (do not include "o" anymore) Blank 1 Blank…

Q: Please answer in short like it definitely don't reject in shorts please... thanksThanks

Q: A group of small appliances on a 60 Hz system requires 20 kva at 0.85 lagging power factor when…

Q: Design a broadband microstrip transformer operating at the center frequency fo=1 GHz to match a load…

A: It is a special transformer which is fabricated for the micro-strip. The strip is consider as the…

Q: it. Find the current induced in the loop. radius cm and resistance10 k, is placed inside the…

Q: QI A 380 V, 50 Hz, 3-phase, star-connected induction motor has the following equivalent circuit…

Q: Q.LA 3 phase 6pole induction generator has rating of 800 KW. The stator is connected to 60 Hz line…

Q: the antenna current of an am transmitter is 11A when an modulated but increase to 14A when modulated…

Q: Solve for the current.

Q: What power density (W/m^2) is required to produce electric field strength of 100 volts per meter in…

Q: 1) In computations, increase the step size to minimize truncation errors. True False

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

Q: Q3 Show that, if the stator resistance of a three-phase induction motor is negligible, the ratio of…

A: Three-phase induction motor. This is an electromechanical motor and works on the induction…

Q: A4-AWSTC crystalline silicon PV aray is operated with an appropriately sized inberter. The inverter…

A: Here we calculate the output of the inverter of the PV system.

Q: State the difference between center tapped and bridge rectifier

Q: Q2. Design a composite high-pass filter to have a cutoff frequency of 5000HZ and a design impedance…

A: High-Pass Filter: A high-pass filter (HPF) is an electronic filter that allows signals with higher…

Q: Given, r(t) = 3t^2, therefore its laplace transform is O a 6/s^3 O b. 6/ s^2 Oc 3/ s^2 O d. 8/ s^3

Q: Write a boundary condition equation 1. Dielectric to dielectric 2. Magneto dielectric to Magneto…

Q: Draw block diagram /circuit diagram of the ff. FM circuits and discuss the operation. 1.FM…

Q: A SERIES CIRCUIT CONSISTING OFAN 80- OHM RESISTOR, A O,30 HENRY INDUCTOR AND A 50-Nf (MICROFARAD)…

A: Power factor: It tells how much active power is utilized by the circuit from the apparent power. The…

Q: The output voltage vo(t) across the parallel connection of the capacitor and a 20 resistor, the…

Q: Determine the capacitance values required for a fourth-order LPF to produce a critical frequency of…

A: In this question we need to find a capacitor value

Q: a load of a customer is more than the rating of the kWh meter so a current transform with a ratio of…

A: This question belongs to measurements and instrumentation . It is based on the concept of CT .…

Q: A coil of 0.5 H inductance and 8 ohms resistance is connected in series with a capacitor across a…

A: The solution is given below

Q: Consider a cellular tower with Pt=10W, Gt=10 dBi, Gr=3 dBi, and L=0 dB, a. At 4000 MHz compute the…

A: Given Consider a cellular tower with Pt=10W, Gt=10 dBi, Gr=3 dBi, and L=0 dB, a. At 4000 MHz…

Q: Three-phase transmission line 90 km long Line impedance z=(0.4+j0.9) ohm/km, If the power Pr=60 MW…

A: The solution is given below

Q: . What is the effect of the field excitation to the back emf of the synchronous motor?

A: Synchronous motor- It is an electric motor which is operated at AC supply. As the name suggest, its…

Concept explainers

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.

Question

A 400V, 50Hz, four-pole, induction motor connected in star, has
these parameters in ohms: RI= 0,62, R2 = 0.33, X1 = 0.94, X2 = 1.42,
and Xm = 30. The speed of the indaction motor is controlled through
the changing of the stator voltage and frequency whilst maintaining
a constant ratio of V/Hz at rated condition. Assuming the rotor
parameters are referred to the stator and for a stator frequency of
30Hz, determine:
(i)The slip at maximum torque
(ii) The speed at maximum torque
(ili) The maximum torque

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

Would a positive-rotating harmonic or a negative-rotating harmonic be more harmful to an induction motor? Explain your answer.
What are the various losses in an induction motor? On what factors do they depend? IV. V. List the different types of stray load losses in an induction motor.
The efficiency of 3-ph induction motor. at (Is=4.5A, T=13 N.m, N=1333 rpm, Pph=864 watt ) is
2. Describe the Torque-Slip characteristics of a three phase induction motor.
6- Which of the following supply is given to the rotor winding of 3-Phase Induction Motor: a) DC Supply b) AC Supply c) No Supply d) Pulsating Supply 7- 3-Phase Induction Motor will have Starting Torque and Starting Current a) High, High b) Low, Low. c) High, Low d) Low, High 8- Which of the following method is used for controlling the speed of an induction motor: a) Changing number of stator poles b) Supply voltage control c) Frequency control d) All the options are correct 9- Which of the following method cannot be used for starting of 3-Phase Squirrel Induction Motor: a) Star-Delta Starting b) Line resistor startling c) transformer Starter d) Rotor Resistance Starting 10- The rotor of a stepper motor has no: a) windings b) commutator c) brushes d) all of the above
A value of magnetizing current in a 3-phase induction motor * gives power factor smaller .. larger smaller. .poor large . better O large...poor O
An 3-phase induction motor(IM) has full load slip = 0.5%. If the rotor circuit resistance is increased so that R2new =2R2old, then the slip at which the motor develops the same full load torque is=.. * ......
Frequency of emf in the stator of a 8 pole induction motor is 50Hz and the rotor emf frequency is 1Hz. The motor speed is ................ Answer
Design and develop equivalent circuit model of a single phase Induction motor with th consideration of core losses present with the parameter consideration of stator resistance R1 and reactance X1 and two rotor parameters which includes r2,x2 and magnetising reactance xm. (Illustration is required) Draw by hand please
1- To control the speed of an induction motor, the supply frequency is reduced by 10%. For the same magnetizing current to remain constant, the supply voltage must be....... a) Reduced by 10%, b) Reduced by 20%, c) Increased by 10%, d) Increased by 20% 2. When maximum starting torqua ic ohtoinod
A freewheeling DC motor is driven with 1000 rpm and a nominal load torque of 80Nm. The field circuit resistance is 200 and the armature circuit resistance is 0.2 O. The field coils are fed with a zero degree transmission angle through a single-phase fully controlled converter connected to a single-phase 240V source. The armature circuit is fed from a single phase 400V source through another fully controlled converter. Magnetic saturation has been neglected, the motor constant is given as 0.8 V - s / A - rad. Assuming that there is no fluctuation in armature and field current, find the control angle of the converter feeding the armature at nominal load. If you want to leave the question blank, click again on the option you marked.
Q4/B/ What are the principal characteristics of a series DC motor? What are its uses? Core Mc