The armature terminal voltage of a separately-excited DC motor increases while the field current and the load are held constant, will the speed of the motor increase or drop?

Q: Choose the correct answer: 9- Parellel resonant transformer test system is used when a) Large test…

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Q: Does a DC motor have to be turning in order for it to develop torque? a) yes b) no Most DC motor…

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Q: Explain the principles of DC motors, including the DC permanent magnet motor and how it can  have…

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Q: 3. A 4-pole, 250-V, d.c. shunt motor has a lap-connected armature with 960 conductors. The flux per…

A: Here  DC shunt motor is given and we have to find developed torque  and useful torque

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Q: A 205 V shunt motor is rated at 5 HP and 1000 rpm. At rated output it draws 29 A of line current.…

A: Given:RSH=101ΩRa=0.5Ω total current, I=29A   Total current is equal to summation of armature current…

Q: The armature resistance of a 230 V dc shunt motor is 0.5 ohms. It runs at 490 rpm when the armature…

A: Given Armature resistance Ra=0.5 Ω Terminal voltage Vt =230 v Speed N1=490 rpm Armature current Ia…

Q: What is value of total loss in armature resistance and field resistance.

A: Given values are - Vt=240VoltIt=15AArmature resistanceRa=0.5OhmField resistanceRf=80Ohm Given motor…

Q: mpare Permanent Magnet DC motor, Series DC Motor, Shunt DC Motor, and Compound DC Motor by: Speed…

A: 1) The speed regulation of the motor is basically the speed of the motor when the motor is at no…

Q: A separately excited dc motor operates at a rated terminal voltage of 240V. It has a total armature…

A: Given: Ia=35 A, Ra=0.22 Ω, kn=0.22, V=240 Volts. Required: Motor speed.

Q: 2. A SEDC motor has an armature resistance of 1.15 ohm and an armature voltage constant kv=0.78…

A: Given Armature resistance Ra =1.15 ohm Armature voltage constant KV =0.78 V/rad/s Rms voltage source…

Q: Explain an experiment in which the speed of a DC motor could be controlled in parallel

A: Please find your answer below in step 2

Q: As shown in the figure below, this is a speed regulation method for DC separately excited notor. 1)…

A: given figure is that a speed regulation method for DC separately excited motor: a)  to explain about…

Q: 2pole ,225v ,DC shunt motor develops an output power of 22KW , if Ra=.05 ohms and Rsh =85 ohms ,the…

A: 2pole ,225v ,DC shunt motor develops an output power of 22KW , if Ra=.05 ohms and Rsh =85 ohms ,the…

Q: Q2- A 6 pole lap connected DC generator has 480 turns ,the resistance of each turn is 0.03 Q, the…

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Q: With the aid of a diagram as shown, explain how does AC generator work and describe the operating…

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Q: The armature of a 10 pole DC shunt generator has 42 slots and is wave wound with 12 conductors per…

A: We need to Find armature current and generated voltage. Solution is attached below

Q: A shunt motor is taking 240 A at 100 V. The armature resistance is 0.015 ohm and shunt field…

A: using ohms law field current =Voltage across field windingField resistance. Armature current=Load…

Q: Q-3) The current drawn by a 120 V dc motor with back e.m.f of 110 V and armature resistance of 0.4…

A: Given- 120 V dc motor, Back emf =110 V, Armature resistance =0.4 ohm, To Find- The current.

Q: At full load, when the DC shunt motor is supplied by 110 V dc source, the armature current is 20 A…

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Q: A 4-pole, DC shunt motor has a flux per pole of 0.04 Wb and the armature is lap-wound with 720…

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Q: A separately-excited DC motor has lap-wound armature with 100 slots and 2 turns per coil. It is…

A:

Q: Q2- A 6 pole lap connected DC generator has 480 turns ,the resistance of each turn is 0.03 Q, the…

A: Generated EMFflux×speed×conductors60×polesparallel paths. Terminal voltage=genarated EMF-drop in…

DC Series Motors

A DC motor is a type of electric motor which converts electric energy into mechanical energy. The forces that are produced by the magnetic field are what those common types of motors rely upon. Either electro-mechanical or electronic, all types of DC motors have some internal mechanism to change the current direction in part of the DC motors. As the DC motors could be powered from existing DC lighting power distribution systems, these motors were the first form of motors widely used. By changing the strength of the current in its field winding or by using a variable supply voltage, the speed of the DC motors can be controlled over a wide range.