A three-phase, y-connected induction motor has a total of 300 effective turns on its stator Determine the maximum value of the flux built up per pole when it is connected to a 220-volt, 60 cycle supply

Q: 1. A series generator supplies to a load of 100A. Armature and field resistances are 0.055930 and…

A: Given: Current, I=100A, Armature resistance, Ra=0.05593 Ω, Field resistance, Rs=0.02593 Ω, Induced…

Q: (a) Explain briefly what is fringing effect and leakage flux. (b) A ferromagnetic core is shown in…

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Q: Describe the similarities in the construction of a DC motor and a DC generator.

A: From a mechanical standpoint, a DC motor and a DC generator are quite similar, but from a technical…

Q: Give the relevant details for drawing lap winding for a de machine with 4 poles, 22 slots and 6…

A: We need to give relevant details for drawing a lap winding for a dc machine having, Poles (P) = 4…

Q: Q2/ A d.c. series motor is running whith a speed of 800 r.p.m. while taking a current of 20 A from…

A: A DC series motor , field winding series with the armature winding.    If Speed N=800rpm drawn…

Q: 4. The de shunt generator is connected to a load that draws 28,800 watts, given the armature and…

A: In the question 4, we need to calculate the generated emf.    We know output power Po= VI Where V…

Q: 4. A three-phase A-connected six-pole winding is installed in 36 slots on a stator. There are 150…

A: Introduction A three-phase delta-connected system is a type of electrical power distribution…

Q: a)Please explain the connection methods of Current and Voltage Transformers?   b) Control the DC…

A: Solution a)- Connection method of current transformer- It has a primary winding of few turns, or…

Q: A four-pole Shunt connected generator has a lap connected armature with 728 conductors. The flux per…

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Q: ) the armature windings of a 12-pole DC machine are composed of 72 coils with 10 windings, and the…

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Q: 4. Explain the importance of residual voltage in a dc generator. Note: Figures and sketches are…

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Q: A common dc machine has a total core loss of 6000 W when operating at rated speed and excitation. A…

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Q: 2) the armature windings of a 12-pole DC machine are composed of 72 coils with 10 windings, and the…

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Q: what is current transformers advantage?

A: The circuits shown below represents  a Three-Phase Current Transformer-  The circuit includes- A…

Q: 2. A six-pole lap wound armature rotating at 350 rpm is required to generate 260 V. The effective…

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Q: h a labelled diagram of any DC machine  Discuss it part

A: A self-excited DC shunt motor, also known as a shunt wound DC motor, is a form of self-excited DC…

Q: A 220 V , 60 Hz , supply is connected to 200 – turn armature winding of reluctance 1.7x105 At / Wb .…

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

Q: The machine shown in Figure 2 has three concentrated stator coils, each of eight turns. The coils…

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Q: There are 4 different coils on the each gears in the magnetic system below. All of these coils are…

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Q: There are 144 slots in a 3-phase, 16-pole, 50 Hz., star connected alternator. There are 4 conductors…

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Q: Evaluate the emf generated in a 6-pole, lap wound DC machine having flux/pole equal to 0.3 wb…

A: Evaluate the emf generated in a 6-pole, lap wound dc machine with the following parameters: Flux per…

Q: b) An 8 pole, lap-wound armature has 1200 conductors and a flux pole is 0.06wb. Determine the gm.f…

A: Number of poles poles  P = 8 Number of conductors   Z = 1200 Flux per pole   Φ  = 0.06 wb  Speed…

Q: A six-pole dc machine has an armature connected as a lap winding. The armature has 32 slots with six…

A: Above question is based on DC generator, the major classification of DC generator are: Series…

Q: Write an introduction and discussion of a report on a topic (Study the Working Principle of DC…

A: Write an introduction and discussion of a report on a topic (Study the Working Principle of DC…

Q: The field circuit of a 125-volt dc generator has a resistance of 50 ohms and an inductance of 12.3…

A: The solution is given below

Q: What should be the number of revolutions of a dc machine to be able to have a generated em of 200V?…

A: In this question We need to determine the speed of the DC shunt motor.  We know E= PΦZN/(60A)

Q: a) A sinewave is having a frequency of 50 Hz and instantaneous value of 250 Volts at 1.3 milli…

A: The solution to both the parts is attached below.

Q: 4.12 In a compound machine, the shunt field winding has 470 turns/pole, and the series field winding…

A: Given current in the series field winding is 15 A and No. of series field turns per pole is 13  and…

Q: 3. The operation of a 3-phase induction motor is based upon the application of: (a) Faraday's law…

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Q: A 220 V , 60 Hz , supply is connected to 200 – turn armature winding of reluctance 1.7x105 At / Wb .…

A: Note: We are authorized to answer three subparts at a time since you have not mentioned which part…

Q: Electric Machines2 What are the characteristics of the rotating magnetic field created by…

A: The rotating magnetic field created by the three-phase current in three-phase stator winding: When a…

Q: A dc machine has hysteresis loss of 300 W and an eddy current loss of 200 W when running at 1200…

A: Hysteresis loss Wh=300 W eddy current loss We=200 W The speed is N=1200 rpm Total core loss…

Q: Question: A 4 Pole DC Generator Is Wounded Lap. It Rotates At 50Orpm To Be Able... A 4 pole DC…

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Q: A shunt generator has an output of 20 kW at a terminal voltage of 230 V. Armature and shunt field…

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Q: Q3) In a two-excitation and two-pole machine, the rotor and stator of both poles are prominent…

A: It is given that the rotor winding is short-circuited. The voltage across the rotor will be zero.…

Q: Two shunt generators are connected in parallel to supply a current of 1500A. Each machine has a…

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Q: An 8-pole dc generator has 960 armature conductors and a flux per pole of 20 mWb. When running at…

A: No. Of pole  P= 8 No. Of conductor  Z= 960 Flux per pole = 20mWb  Running at speed  N= 500rpm Lap…

Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.