Find the total external armature current of a dc machine which has the following specifications: 120 armature slots; 6 conductor per slot; 9300 lines per cm2 flux density; armature diameter of 28 inch ; 14 inch armature axial length ; 4 armature parallel path ; the pole span 72 % of the armature surface and the torque developed by the armature 1500 lb-ft.

Q: 1.2 The armature of an 8-pole dc machine has 72 slots, and its diameter is48 cm .Find the pole pitch…

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A: In this question,   We need to determine the speed and efficiency of the generator

Q: Example 3-1 An armature is wound simplex lap in a six-pole generator. The total number of conduc-…

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Q: Question 4 For an armature voltage of 100V, and an armature current of 10A, a separately excited dc…

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Q: A four-pole Shunt connected generates 120 V. If the generator supplies an incandescence lamp (100V,…

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Q: Find the total external armature current of a dc machine which has the following specifications: 120…

A: Using torque equation of DC motor calculate armature current.  Torque of DC motor  =12π×∅×Z×Ia×PA.…

Q: c. Explain the construction and working of permanent magnet DC moto

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Q: 7- An 8-pole d.c. machine of 1200kW, 600V, 500 rpm and the average value of the reactance voltage…

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Q: 7- An 8-pole d.c. machine of 1200kW, 600V, 500 rpm and the average value of the reactance voltage…

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Q: Nhich of the following parameter is responsible for the degree of armature reaction, affecting the…

A: The effect of armature flux on main field flux which reduces the overall main field flux is known as…

Q: Find the total external armature current of a dc machine which has the following specifications: 120…

A: Torque = 12π flux ×number of armature conductors ×number of poles number of parallel paths…

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A: Step-1->Working Principle of DC Motor-:Fleming's Left-Hand Rule, which states that when a…

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Q: A DC motor connected with 230 V, 50 Hz main supply and the EMF produced by the armature is 200 V. If…

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Q: Explain the following Armature Winding Terminologies (i) Coil Span (ii) Resultant Pitch

A: In the following section, coil span and resultant pitch related to armature winding technology has…

Q: THE ARMATURE OF A 4-POLE, 128 SLOTS SHUNT GEN. IS LAP WOUND WITH FOUR CONDUCTORS PER SLOT. THE FLUX…

A: Given,Pole, P=4Slots, S=128Conductors per slot, C=4Flux per pole, ϕ=50 mWbArmature resistance,…

Q: A DC machine has total armature ampere conductors of 4500 and total flux in the machine is 0.14 wb.…

A: Given information is shown below:

Q: The relationship between field current and induced armature voltage is known as open circuit…

A: The open circuit characteristics of DC machine is the graph drawn between INDUCED EMF IN ARMATURE…

Q: Q4/ Define the armature reaction, at no load what is the armature reaction value and how to reduce…

A: The explanation is as follows.

Q: "Which of the following parameter is responsible for the degree of armature reaction, affecting the…

A: The effect of armature flux on the main field flux is called armature reaction. When armature…

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Q: 1.) a)Determine the type of DC Machine that can be utilized in traction purposes and locomotives on…

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Q: Q3. A four-pole de machine has an armature radius of 12.5 cm and an effective length of 24 cm. the…

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

Q: Explain the term armature reaction in DC machines

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Q: Q4 A dc machine has armature resistances of 0.09 2, armature current 45 A at 130 V. Determine the…

A: Given                DC machine with  Armature resistance Ra=0.09 ΩArmature current Ia=45 ATerminal…

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Q: A DC machine has 2 poles on the stator, the armature winding has 20 coils and 8 turns per coil. The…

A: Poles=2 Coils=20 Turns per coil=8 r=12.5 cm l=25 cm

Q: 20. Two shunt generations each having an armature resistance of 0.05 ohm and field resistance 40…

A: It is given that: Ra=0.05 ΩRf=40 ΩIT=2000 AEa2=260 VEa1=250 V

Q: his according to the average magnetic flux below the poles what is the value of its density?

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Q: Armature reaction i

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Q: Explain the Construction and Applications of DC Machines.

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Q: Derive the EMF and Torque equations of DC machines from the first principles.

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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.