A 4-pole Direct Current (DC) armature wave winding has 294 conductors question help
Question 39. A 4-pole Direct Current (DC) armature wave winding has 294 conductors:
(i) What flux per pole is necessary to generate 230 V when rotating at 1500 revolutions per minute (rpm)?
(ii) What is the electromagnetic torque at this flux when rated armature current of 120 A is flowing?
(iii) How many interpole ampere turns are required with this current if the interpole gap magnetic flux density is to be 0.15 tesla and the effective radial air gap is 8 mm. Neglect the magnetic motive force absorbed by the iron.
(iv) Through what mechanical angle must the brushes be moved away from the quadrature axis (magnetic neutral axis) if it is required to produce a direct-axis (magnetic poles main axis) magnetization of 200 ampere turns/pole?
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A 4-pole Direct Current (DC) armature wave winding has 294 conductors question help
A 4-pole Direct Current (DC) armature wave winding has 294 conductors (HELP)
Question: A 4-pole Direct Current (DC) armature wave winding has 294 conductors: (i) What flux per pole is necessary to generate 230 V when rotating at 1500 revolutions per minute (rpm)? (ii) What is the electromagnetic torque at this flux when rated armature current of 120 A is flowing? (iii) How many interpole ampere turns are required with this current if the interpole gap magnetic flux density is to be 0.15 tesla and the effective radial air gap is 8 mm....
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An eight-pole, 25 kW, 120 V DC generator has a duplex lap-wound armature, which has 64 coils with 16 turns per coil. Its rated speed is 2400 rpm
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Please, consider this as a single question, and answer it if possible. Any help will be...
Please, consider this as a single question, and
answer it if possible. Any help will be rated for
sure.
The DC machine, which has the armature resistance Ra=0.12, shunt field winding resistance Rfw=8022 and control rheostat (Rfc), is connected to a 100V DC power supply and operated at a DC shunt motor. At no-load condition, the motor runs at 1000rpm and armature takes 6A. The magnetization curve of the machine at 1000rpm is shown in the Fig. 1. 120 ,...
A 8-pole DC machine has an armature of radius 0.4m and effective axial length 0.3m. The armature winding has 60 coils of 5 turns each and is simplex wave-wound with parallel path 2. The average flux density at the air-gap under each pole is 0.7T. Find the following: 0 The total number of conductors in the armature winding (11) Flux per pole Wb/m2 (iii) The machine constant ke or kt (iv) Induced armature voltage if the speed of the armature...
2S QUESTION 3 (a) In the direct-current (d.c.) generator shown in Figure 03.1, (i) ?, is the useful flux per pole, (ii)"N,' is the speed of the armature in revolutions per minute (rpm), (ii) 'p' is the number of pole-pairs/pairs of poles, (iv) 'Z' is the total number of conductors on the armature and (v) c' is the number of parallel paths through the winding between the positive and the negative brushes. From first principles and in not less than...
1. Name the various parts of a DC machine and give their function. 2. A four-pole de machine with a lap wound armature has a total of 652 armature conductors with an armature resistance of 0.1502. When run as a generator on open circuit at a speed of 400rpm, the armature terminal voltage is 262V. Each pole shoe arc has a diameter of 42cm, subtends an angle of 60° and has an axial length of 20cm. 2.1.Calculate the useful flux...
Problem 1: A four pole, 60Hz, 3-d synchronous generator has a rotor radius of 15 cm, a rotor length of 2.7m, and an air gap length of 2 mm. The rotor field winding consists of 1000 turns with a winding factor of 0.962. The Δ connected armature winding has 25 series turns per phase with a winding factor of 0.935. The generator is designed to achieve rated open-circuit voltage at a peak air-gap flux density of 1.25 T (a) At...
Please, consider this as a single question, and
answer it if possible. Any help will be rated for
sure.
The DC machine, which has the armature resistance Ra=0.12, shunt field winding resistance Rfw=8022 and control rheostat (Rfc), is connected to a 100V DC power supply and operated at a DC shunt motor. At no-load condition, the motor runs at 1000rpm and armature takes 6A. The magnetization curve of the machine at 1000rpm is shown in the Fig. 1. 120 ,...
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