DC
A four-pole DC generator with lap winding has 48 slots and 4 conductor per slots. How many coils does it have? *
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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 (HELP)
Question: 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.(a) Define a duplex lap-wound DC armature. (b) How much flux per pole is required to produce the rated voltage in this generator at no load conditions? (c) What is the induced torque in this machine at rated load? (d) Determine path current in the armature of this generator at the rated load? ...
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
Quesition a1. 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. (a) How much flux per pole is required to produce the rated voltage in this generator at no load conditions? (b) What is the induced torque in this machine at...
a 6-pole dc generator has a simple wavy winding induced with 288 coils of 5 turns...
a 6-pole dc generator has a simple wavy winding induced with 288 coils of 5 turns each, the resistance of each turn is 0.022 ohms between lap, its flow per pole is .15wb and it is rotating at 600 rpm a) how many current paths there is in the machine b) what is the armature voltage induced in this machine c) what is the effective resistance of the armor of this machine d) if a 5kohm resistor is connected to...
A PM, lap-wound dc generator has 8 poles, 72 slots, and 6 turns per coil. The...
A PM, lap-wound dc generator has 8 poles, 72 slots, and 6 turns per coil. The rated current per conductor is 12.5 A. The no-load terminal voltage at 1600 rpm is 120 V. Calculate (a) the required flux per pole and (b) the power developed. If the machine was wave wound, what would be its rated voltage, armature current, and power?
An eight-pole 500 V, 500 kW dc generator has a lap winding with 640 armature conductors. If the g...
An eight-pole 500 V, 500 kW dc generator has a lap winding with 640 armature conductors. If the generator has six commutating poles, determine the following: (a) The number of turns in the commutating winding if the mmf of the commutating poles is 1.8 times that of the armature (b) The number of conductors for the compensating winding in each pole face if the generator has a compensating winding and the pole face covers 80% of the pole span (c)...
Q2 a) Define the following terms in instrumentation and electric machines theory: Intermediate transfer device, Sali...
Q2 a) Define the following terms in instrumentation and electric machines theory: Intermediate transfer device, Salient-pole machine. Deflection instrument. b)Calculate the induced emf and torque of a DC series motor which runs at 400 rpm and carries an armature current of 25A with a flux per pole of 40 mWb. The machine is 4-pole lap wound and has 56 slots, each housing 16 conductors on s armature. JEstablish the methods of speed control of armature diverters. dJA 3-phase, 6pole, 750...
A-4 pole, lap-wound, long shunt, dc compound generator has useful flux per pole of 0.07 Wb....
A-4 pole, lap-wound, long shunt, dc compound generator has useful flux per pole of 0.07 Wb. The armature winding consists of 220 turns and the resistance per turns is 0.004 Ω. Calculate the terminal voltage if the resistance of the shunt and series field are 100 Ω and 0.02 Ω respectively; when the generator is running at 900 rpm with armature current 50 A. Also calculate the output power in kW for the generator.
electrical machines and power course. please answer the question including all parts (1), (2), (3) An...
electrical machines and power course. please answer
the question including all parts (1), (2), (3)
An eight-pole, 25-kW, 120-V dc generator has a duplex lap-wound armature which has 64 coils with 10 turns per coil. Its rated speed is 3600 rpm. 1. How much flux per pole is required to produce the rated voltage in this generator at no-load conditions? 2. What is the current per path in the armature of this generator at the rated load? 3. What is...
the winding of a dc generator has 2 parallel paths and 200 conductors. If the resistance...
the winding of a dc generator has 2 parallel paths and 200 conductors. If the resistance per conductor is 5 mili ohms, what is the total armature resistance?
A 8-pole DC machine has an armature of radius 0.4m and effective axial length 0.3m. The...
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...
Q2 a) Define the following terms in instrumentation and electric machines theory: Intermediate transfer device, Salient-pole machine. Deflection instrument. b)Calculate the induced emf and torque of a DC series motor which runs at 400 rpm and carries an armature current of 25A with a flux per pole of 40 mWb. The machine is 4-pole lap wound and has 56 slots, each housing 16 conductors on s armature. JEstablish the methods of speed control of armature diverters. dJA 3-phase, 6pole, 750...
electrical machines and power course. please answer
the question including all parts (1), (2), (3)
An eight-pole, 25-kW, 120-V dc generator has a duplex lap-wound armature which has 64 coils with 10 turns per coil. Its rated speed is 3600 rpm. 1. How much flux per pole is required to produce the rated voltage in this generator at no-load conditions? 2. What is the current per path in the armature of this generator at the rated load? 3. What is...
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...
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