How can the polarity of an electromagnet be determined if the direction of current flow is known?

Q: What will be the reluctance of a magnetic core if the mean path length for flux is 0.04 m and the…

A: We need to find out the reluctance for given details

Q: Given: flux per pole = 1,900,000 maxwells; pole pitch = 6.25; gross length of armature core

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Q: Shown magnetic circuit has current 10 A in the coil of 2000 turns. Assume all branches have the same…

A: Magnetic Circuit:- A magnetic circuit is a closed path through which magnetic flux flows. A magnetic…

Q: 1. An armature with 4 poles rotates at 11 r/s. The useful flux per pole is 93600µWb. Calculate, 1.1…

A: In the question,  The number of pole P= 4  Speed N= 11 r/s  Flux per pole= 93600uWb= 0.936Wb The…

Q: 4-pole, wave-wound armature has 72 slots with two coil-sides per slot, each coil has four turns. If…

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Q: For the electromagnet of Figure-a. Find the flux density in the core.b. Sketch the magnetic flux…

A: The magnetic flux density (B) is the ratio of magnetic flux (∅) to area of cross section (A) and…

Q: A self-excited DC generator has lost its residual magnetism and therefore cannot work (cannot…

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Q: ). The current in a conductor on the armature of a dc motor is 300A. The flux under the poles is…

A: Dear,as per company guidelines we can answer only one question at a time, kindly post other question…

Q: A current of 15 A is passing along a straight wire. Calculate the force on a un magnetic pole placed…

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Q: Consider the magnetic circuit in figure. A current of (3A) flows through 200 turns of wire around a…

A: a) Consider the magnetic circuit with air gap is shown in Figure 1. Figure 1 Consider the…

Q: The steel magnetic actuator shown below is excited by DC, with I=2A and N=600 turns. The three gaps…

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Q: A simplex lap wound armature has 540 conductors and carries a current of 95 amperes per armature…

A: Given:-

Q: Assume that the magnetic core shown in the fig is made up of  M19 29 gauge sheets with a cross…

A: Given information: The magnetic core shown in the fig is made up of  M19 29 gauge sheets with a…

Q: If there is a current of 2 A flowing counterclockwise in the coil (as seen from the +z direction)…

A: Torque is defined as the moment of force in a specific direction. It is mostly found in a rotational…

Q: Başka yönergeler almak lÇIH tIRlayın In figure, a magnetic flux of F is generated with a constant…

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Q: In your own words define magnetic flux and self-inductance?

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Q: Question 3 – Direct Current Machines a) Describe, with the aid of diagrams, the construction and…

A: NOTE:- Here only part (a) will be answered. To et solution of part (b) post the Q. again &…

Q: to magnetic flux density of 1.0 T at the airgap. The details are provided as follows: Number of turn…

A: Given,Magnetic flux density of air gap(B)=1.0TNumber of turn of field winding in each pole(N)= 200…

Q: Figure Q3(b) shows a coils of 200 turns in uniformly wound around XX material with an average…

A: To calculate current in both conditions of materials

Q: S magnet retort stand coil voltmeter 17. Which of the following statements is TRUE when the magnet…

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Q: magnetic ring has a mean circumstance of 20 cm and a cross section of 20 cm2 and has 800 numbers of…

A: In this question we will find relative permeability of iron with given data...

Q: (а) (i) , UTM Explain the term 'permeability' and what is the unit used? M TM (iii) Sketch suitable…

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

Q: A type material that is not affected by magnetic field. 2. If the number of turns is doubled, what…

A: Based on the magnetic properties the materis are classified in three catagories 1. Diamagnetic…

Q: 4: Write the symbol and define each of the following terms related to the permanent magnet circuit…

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Q: The total flux emitted from the pole of a bar magnet is 2x(10)^-4 Wb, if the flux spreads out so…

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Q: The current in a conductor on the armature of a dc motor is 300A. The flux under the poles is…

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Q: 7 a. Draw and explain magnetic Hysteresis curve. b. What is dot convention for magnetic circuits?…

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

Q: A)The left hand rule for a coil is such that if you were to hold a coil in your left hand with your…

A: The explanation is as follows.

Q: (i) Explain the term 'permeability' and what is the unit used? (ii) Sketch suitable curve/graph that…

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Q: b Shown magnetic circuit has current 10 A in the coil of 2000 turns. Assume all branches 10 cm have…

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Q: Which part of the DC machine produce the magnetic flux? a. Yoke b. Armature c. Brush d. Field…

A: The field winding connects with DC supply. Whenever the field winding is energies, it produces the…

Q: Which of the following is?are an application of electrimagnets. A) relays, B) generations, C)…

A: An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.

Q: Which of the following is the analogous of current in an electrical circuit when it is compared to a…

A: The detailed answer is solved below according to the given parameters and instructions in the…

Q: raw a complete and detailed vertical cross dc,machine Label all parts, Show the path of the flux?

A: A DC machine is an electrical device which converts mechanical energy into electrical energy or…

Q: Consider the linear electromechanical system shown in Figure 5.14. Assume that only the coil shown…

A: We have an electromechaical system as shown in figure, Cross sectional area of air gap (A) = 25 *…

Q: Draw a complete and detailed vertical cross machine Label all parts, Show the path of the flux. 1.…

A: This question is from "Electrical Machine". Under which we are going to study about the detailed…

Q: he length of a magnetic circuit in a moving iron instrument is 300mm. The coil around the soft-iron…

A: Given: length of magnetic circuit (l)=300 mm= 300 x 10-3 m Number of turns (N)= 360 Current (I)=…

Q: The total conductor in the grooves of the DA in the figure is 1440 conductors, the length of the…

A: The E.M.F produced by the dc machine is given by the expression as shown below:  E=PϕNZ60AP= Number…

Q: A 8 pole lap wound armature rotated at 350brpm is required to generate 260V. The useful flux per…

A: A DC machine is classified in two types. DC motors DC generators Above question is based on DC…

Q: Calculate the voltage of the DC source and the stored field energy of the actuator illustrated in…

A: Given: An actuator system: The dimensions of the magnetic circuit proposed in the shown figure…

Q: A. Explain by drawing the electromagnetic hysteresis. (show all parameters on the graph). B. Compare…

A: A) Electromagnetic hysteresis- If an ac current is made to flow through any magnetic material then…

Q: Consider the magnetic circuit in figure. A current of (3A) flows through 200 turns of wire around a…

A: (a) Let the magnetic circuit with air gap is shown below: Consider the neglecting leakage flux and…

Q: The length of a magnetic circuit in a moving iron instrument is 300mm. The coil around the soft-iron…

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Q: 1- The armature of a 2-pole, 200V generator has 400 conductors and runs at 300 r.p.m. Calculate the…

A: *As per our guidelines we are supposed to answer?️ only one question. Kindly repost other questions…

Q: The torque applied to move the pointer is 279.8x10 N/m^-1 and it creates the 0.859 Wbm^-2 magnetic…

A: Given Data: T = 279.8 x 10-6  N/m B = 0.859 Wbm^-2  A = 0.055 cm x 0.125 m V = 21.9 V P = 286.9 mW

Q: The coercive magnetizing intensity (Hc) shown in the hysteresis loop below is defined a B (or)…

A: In this question , we will write about coercive magnetizing intensity...

Q: The current in a conductor on the armature of a DC motor is 300A. The flux under the poles is 850…

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Q: =. A 4-pole, lap-wound armature has 144 slots with two coil sides per slot, each coil having two…

A: Given, Number of poles, P=4 Lap wound, A=P=4 Slots, S=144 with 2 coil sides per slot and each coil…

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.