The field coil of a D.C. motor is shunted by a 270Ω arc-quenching resistor as shown below: 1. Calculate the total current supplied to the circuit 0.3 seconds after switching on

Q: A three-phase, 4-pole, 60 Hz induction motor has a full-load speed of 1746rpm. What is the slip…

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Q: Question-4 For each of the following main parts that make up the alternator (1 to 4), choose the…

A: As per guidelines I am solving first question only.

Q: In an induction motor running, if the direction of the rotating field is changed by swapping the two…

A: When we swapping any two phase of induction motor,  direction of rotating magnetic field get reverse…

Q: A 50-HP 400-volt 12-pole 60-Hz wye-connected 3-phase synchronous motor has armature resistance of…

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Q: 2. The shown set of mechanical characteristics applies for: a) DC motor with armature voltage…

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Q: Find the magnitude and phase angles of the currents in the is applied to the motor under starting…

A: Given,                 P=1KW            V=120V             f=60Hz   a)…

Q: What are the similarities between an open-type split-phase motor and a capacitor-start motor? Select…

A: Open-type split phase motor has a centrifugal switch that operates when the motor reaches 75% of the…

Q: A 115 V,60 Hz, 4 pole 1-phase induction motor rotating in clockwise direction with 1710 rpm. What…

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Q: 2.a) 50 hz induction motor has 2 poles and run at 2,850 rpm. What is the percent slip?

A: Given, An induction motor has, Number of Pole, P = 2 Rotor speed, NR=2,850 rpm

Q: (1) Meter constant of a single phase energy meter is 1200 revolutions per kwh. If it makes 1200…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: 1-why the slipoccur in the induction motor? 2- why the slip is less than 1? 3-what the adrantage…

A: The explanation is as follows.

Q: A 220 shunt motor has Ra= 0.05 ohm, Rsh =60 ohm and n max = 92.5% . What is the stray power loss.

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Q: In variable voltage control method of three phase induction motor, slip produced in the motor…

A: Need to find true false for the variable voltage control method of induction motor

Q: An auxiliary phase winding is used in a single-phase fractional horsepower motor to A. decrease flux…

A: In this question we will write about auxiliary phase winding.....

Q: A Flyback converter (for questions 1-3) shown below has the following parameters. Vin=100V, Vo=20V,…

A: Note: As per our policy, I have attempted the first three questions. Given data: Vin=100 VVo=20…

Q: The single phase full wave AC voltage controller operates on a single phase supply voltage of 230 V…

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Q: 6.a. An a-c electrolytic capacitor is placed in the auxiliary-winding circuit of a single-phase…

A: Answer (6.a.): For starting of single phase motors high starting torque is required which is…

Q: -H2 capaclt start mUL param Tor the main ana SPU auxiliary windings (at starting): Zmain = 4.82 + j…

A: Given thatP=1kWV=120 voltf=60HzZmain=4.82+j7.25ΩZaux=7.95+j9.21Ω

Q: Q2: b- Explain how does the three- phase induction motor work?

A: INDUCTION MOTOR: Based on the rotor construction, the induction motor is classified into Squirrel…

Q: Which one of the following statements is not correct about synchronous machine Select one: O a. The…

A: Choose the correct options Which statment is not correct for synchronous machine.     *Multiple…

Q: A three-phase, 60 Hz, squirrel-cage induction motor draws a current of 385 amps per phase and a…

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Q: A 15kVA, 440V, single-phase alternator draws a field current of 5A at rated load. With the same…

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Q: How to reduce eddy current losses produced in a three phase induction motor? O a. All given choices…

A: The hyterisis loss and the eddy current loss are present is in three-phase induction motor. it is…

Q: Question 3 AA connected 380 V rms (line to neutral) 60 Hz two-pole induction motor has the following…

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Q: A 3-phase induction motor is wound for 4 poles and is supplied from 50 Hz system. Calculate (i)…

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Q: A 115 V, 70 Hz, 4 pole 1- phase induction motor rotating in clockwise direction with 1710 rpm. What…

A: Given: Voltage (V)=115 VFrequency f=70 HzPoles P=4Rotor speed Nr=1710 rpm

Q: 5.a) A 4 pole, 3 phase induction motor operates from a 50 Hz supply. Calculate (a) Speed at which…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: Induction motor Select one: O a isused in limited applications O b. is doubly fed motor since it…

A: Option c is correct. The detailed explanation is provided below.

Q: Write the following RLL program: It is desired to design the controls for a large, three phase AC…

A: Note: “Since you have posted multiple questions, we will provide the solution only to the first…

Q: The rated speed of a three-phase, 2-pole, 50 Hz cage induction motor is more likely to be d) 1750…

A: Given: A 3-phase cage induction motor has, Number of poles, P=2. Rated frequency, f=50 Hz.

Stator and Rotor Magnetic Field

The stator and rotor magnetic field is the resulting magnetic field generated by a system of coils that are symmetrically aligned. They are supplied with polyphase currents. The magnetic field is generated by poly-phase (two or more phases) current or single-phase current. In the latter case, two field stator windings are supplied and two resulting electromagnetic fields are generated beyond the stage.