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Question (2) A 4-Pole, 220 V shunt motor has 540 lap-wound conductors. It takes 32 A...
Show all working 1. A 4 pole, 220 V, 10 H.P, d.c. shunt motor is rotating...
Show all working 1. A 4 pole, 220 V, 10 H.P, d.c. shunt motor is rotating at a speed of 320 rpm. Then the developed useful torque is 2. A 4 pole, lap wound d.c. motor drawing an armature current of 20 A has 360 conductors. If the flux per pole is 0.015 Wb then the gross torque developed by the armature of motor is 3. A 220 V, d.c. motor draws an armature current of 20 A. Its armature...
1. A 4 pole, 220 V, 10 H.P, d.c. shunt motor is rotating at a speed...
1. A 4 pole, 220 V, 10 H.P, d.c. shunt motor is rotating at a speed of 320 rpm. Then the developed useful torque is a.210.647 N-m b.215.547 N-m c.219.484 N-m d.None of these 2. A 4 pole, lap wound d.c. motor drawing an armature current of 20 A has 360 conductors. If the flux per pole is 0.015 Wb then the gross torque developed by the armature of motor is a.10.23 N-m b.15.56 N-m c.17.17 N-m d.19.08 N-m 3....
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.
The armature of a 6-pole separately excited dc generator is lap wound with 534 conductors. This...
The armature of a 6-pole separately excited dc generator is lap wound with 534 conductors. This machine delivers power to the load at 250V while being driven at 1000 rpm. At this load, the armature circuit dissipates 640W. If the flux per pole of this generator is 30-mWb, determine the kW rating of the load served.Assume a total brush contact drop of 2V.
A 4-pole, lap wound, d.c machine has total number of 800 armature conductors and produces 0.03...
A 4-pole, lap wound, d.c machine has total number of 800 armature conductors and produces 0.03 Wb flux per pole when field is excited. If the machine is driven by a prime mover at 1000 rpm, calculate the generated emf across the armature. If the generator is loaded to deliver an armature current of 50 A, Calculate the prime mover and electromagnetic torques developed at this load current. Neglect frictional torque.
220 v dc shunt motor has Ra= 0.25 ohms and Rf=120 ohms . At no-load the...
220 v dc shunt motor has Ra= 0.25 ohms and Rf=120 ohms . At no-load the motor draws a current It=6A. And runs at 1500 rpm. At full-load the motor draws 62 A. the armature reaction at full load reduces the flux by 10%. Determine the rotational losses , motor speed at full-load, the shaft torque and efficiency.
An eight-pole, 25-kW, 120-V de generator has a duplex lap-wound armature which has 64 coils with...
An eight-pole, 25-kW, 120-V de 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 induced torque in this machine at the rated load?
An eight-pole, 25-kW, 120-V de generator has a duplex lap-wound armature which has 64 coils with...
An eight-pole, 25-kW, 120-V de 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 induced torque in this machine at the rated load?
An eight-pole, 25-kW, 120-V de generator has a duplex lap-wound armature which has 64 coils with...
An eight-pole, 25-kW, 120-V de 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 induced torque in this machine at the rated load?
A6 A 8-pole lap wound armature rotated at 600 rpm is designed to generate 240 V....
A6 A 8-pole lap wound armature rotated at 600 rpm is designed to generate 240 V. The flux per pole is 0.06 Wb and the armature has 100 slots. (a) Determine the suitable number of conductors for each of the slot. (b) Based on the result found in part (a), calculate the armature voltage if its winding is changed to a wave winding and the motor speed is decreased to 200 rpm. (3 marks) (2 marks) A7 Elaborate the merits...
An eight-pole, 25-kW, 120-V de 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 induced torque in this machine at the rated load?
An eight-pole, 25-kW, 120-V de 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 induced torque in this machine at the rated load?
An eight-pole, 25-kW, 120-V de 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 induced torque in this machine at the rated load?
A6 A 8-pole lap wound armature rotated at 600 rpm is designed to generate 240 V. The flux per pole is 0.06 Wb and the armature has 100 slots. (a) Determine the suitable number of conductors for each of the slot. (b) Based on the result found in part (a), calculate the armature voltage if its winding is changed to a wave winding and the motor speed is decreased to 200 rpm. (3 marks) (2 marks) A7 Elaborate the merits...
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