The rotor winding of the induction motor at no load condition is equivalent to O connected to an inductive load short circuited connected to a resistive load O open circuited

Q: At startup, line connected induction machines can draw up to X times their rated current. 4 0.5

A: The rotor impedance of the induction motor when parameters are referred to the primary: Z=Rs+jX At…

Q: a) Determine the suitable capacitor to make 90° electrical between Im and la at starting running of…

A: Given data, Za=7.8+j3.2 ΩZm=2.4+j3.8 Ω Supply voltage V = 205 V Frequency f = 60 Hz Angle between im…

Q: In a single phase AC capacitor start and run induction motor, to make the rotation in anti-clockwise…

A: Given a single phase AC capacitor start and run induction motor,

Q: A 50 Hz, 3-phase induction motor is working at a full load speed of 1440 r.p.m. The full load slip…

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Q: A three-phase induction motor is supplied by a 50 Hz A.C. source and runs at 960 rev/min, evaluate…

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Q: A single-phase AC voltage controller has a resistive load R = 10 Ohm, and the RMS input voltage is…

A: First we will draw output voltage waveform and than we wi find output RMS voltage.

Q: The inductive reactance of a 0.06-H coil connected to a 120-V, 60-Hz source is?

A: Given, Inductance (L) = 0.06H Frequency of source (f) = 60Hz Vs= 120V

Q: number 1, the other side of the same coil lies in slot number 13. Calcuit... The coils are short…

A: Winding factor = short pitch factor × distribution factor.  Short pitch factor = cos (ne/2)  Where n…

Q: The synchronous speed of a three-phase induction motor having 20 poles and connected to a 50 Hz…

A: Given: For a three phase induction motor, Poles, P=20 Frequency, f=50

Q: H.W/ State the difference between an induction motor with a wound rotor member and a squirrel cage…

A: Induction motors are operating on the basis of rotating magnetic field (RMF). Where RMF has constant…

Q: Determine the value of the capacitor to raise the power factor to unity when two induction motor…

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Q: True or False: An inductor is the field winding of a DC Machine.

A: Any coil we use in machines is an inductor. Although they are not ideal inductor as some resistance…

Q: If synchronous motor takes more value of DC field current then motor supplies reactive power to…

A: Choose the correct option.  The given statement.  If synchronous motor takes more value of DC field…

Q: Choose True or False True False When the rotor is loaded the slip is increased the power factor…

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Q: Adding inductance to the rotor circuit will:

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Q: in Blocked rotor test of three phase Induction motor,when r2/ s is split into a series connection of…

A: The equivalent circuit of Block rotor test of 3-phase Induction motor is:

Q: False True When the rotor is loaded the slip is increased the power factor improves when the rotor…

A: 1) when rotor is loaded the the speed is decreased hence slip is increased. Answer: True   2) There…

Q: The number of poles in the rotor circuit of a 3-phase induction motor is O Always two. Zero, because…

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Q: A three-phase induction motor has the following parameters: Uc 380V,

A: Three Phase Induction machine- This Induction machine comprises of rotor and stator as it basic…

Q: Squirrel cage induction motor has less efficiency. Select

A: In this we will write about squirral cage IM efficiency...

Q: Draw the squirrel cage rotor of the three phase induction motor and explain the same.

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Q: Generators using salient pole structure rotors are called turbo-alternators. Select one: O True O…

A: The explanation is as follows.

Q: The full load speed of a 60 Hz, 3-phase induction motor is 1120 r.p.m. The number of poles in the…

A: induction motor always near to synchronous speed  and synchronous speed =120*frequencyn. of poles…

Q: A three-phase induction motor must start with reduced voltage, Us < Us , so

A: Three Phase Induction machine- This Induction machine comprises of rotor and stator as it basic…

Q: A 50 Hz, 3-phase induction motor is working at a full load speed of 1440 r.p.m. The number of poles…

A: Full load speed = 1440 f = 50 Hz

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A: In this question, induction machine frequency given and speed of machine given..We have to find out…

Q: A 50 Hz 4 pole induction motor has a rotor inductance of 40 mH. Find the rotor reactance when motor…

A: Number of poles, p=4 Speed of rotor, N=1300 rpm Inductance of rotor LR=40 mH=40×10-3H Frequency of…

Q: The part of rotor resistance of a 3-phase induction motor which represents electrical equivalent of…

A: In this question , we will see electricals equivalent to mechanical load on induction motor..

Q: The rotor of a wind turbine rotates at 18 rpm and uses a 4 pole, 60 Hz, synchronous generator. 1.…

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Q: The parameter of an equivalent circuit of a three-phase induction motor affected by reducing the rms…

A: Firstly drawing the general circuit diagram for the three-phase induction motor:

Q: The Squirrel cage induction motor has high efficiency. Select one: True False

A: There are two types of Induction motor: 1) Squirrel Cage induction Motor 2) Slip ring Induction…

Q: The Squirrel cage induction motor has more rotor copper losses. Select one: O True O False

A: Choose the correct option Squirrel cage induction motor has more rotor copper losses?  Is it true or…

Q: A Star 3Phase source with phase voltage of 400V at 50HZ is connected to a delta connected 3Phase AC…

A: In the Star Connection, the 3 winding's similar endpoints are connected to a common point known as…

Q: A six pole induction motor is connected to a 25Hz supply and at full load the rotor emf makes 105…

A: The relationship between supply frequency and rotor frequency is given as Fr=S*F Where Fr= Rotor…

Q: Flux ines are..to the surface of the poles If the poles are concentric to the rotation of a coil,…

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

Q: B - Determine the suitable capacitor to make 90° electrical between Im , la at starting running of…

A: Given : Zm=2.4+j3.8ΩZa=7.8+j3.2Ω

Q: An induction machine is supplied with phase input voltage of 24020 and input current 20Z-10. The per…

A: Give data: V=240∠0 VI=20∠-10 A Here,  V=240 VI=20 A θV=0θI=-10

Q: a) 5A The synchronous speed of a 4 pole, 3-phase Induction motor is 1800 rev/min. The frequency of…

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Q: The part of rotor resistance of a 3-phase induction motor which represents electrical equivalent of…

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Q: The starting winding circuit of a capacitor start, induction run motor consists of a 15 resistance…

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Q: Practically in the field,the transmission line connected between the generating station and…

A: The transmission is line is basically represented by it's characteristic impedence.

Q: student working on 4 poles three-phase induction motor at 50 Hz supply and it is having a slip of…

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Q: D. squirrel-cage

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Q: The coils of a 3 phase induction motor have values of R=5Q and L=22.3mH. They are connected to a 400…

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Q: The synchronous speed of a three-phase induction motor having 20 poles and connected to a 50 Hz…

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Q: A student working on 4 pole three phase induction motor at 50 hz supply and it is having a slip of…

A: pole=4  Fs=50 Hz Slip = 3%=0.03

Q: In three-phase induction motor rotor speed is zero at the time of starting the induction motor.…

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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.