100-V series motor is used to drive a load through a pulley. This machine has an armature resistance of 0.2 ohm and a series-field resistance of 0.25 ohm. When a torque of 25 N-m is applied to the pulley, the speed is 600 rpm. If SPL

Q: A D.C series motor hoists a load at 4 m/sec while taking 30 A at 300 V from D.C mains. The total…

A:

Q: Give the relevant details for drawing lap winding for a de machine with 4 poles, 22 slots and 6…

A: We need to give relevant details for drawing a lap winding for a dc machine having, Poles (P) = 4…

Q: 4) A dc. ahunt machine while running as generator develops a voltage of 240 V at 1000 rp.m. on…

A: In this question we will find speed and efficiency of motor with given data....

Q: A DC motor takes an armature current of 100 A at 440 V. The armature circuit resistance is 0.3 0.…

A: Given a DC motor with, Armature current, Ia=100 A Terminal voltage, V=440 V Armature resistance,…

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A: Given: A 2 pole synchronous machine in which lg=2.5mmAg=500cm2I=5AN=500μc=∞ According to question:…

Q: A 220 V permanent magnets DC motor has an armature resistance of 0.502. If the full load armature…

A: Given data, Terminal voltage V = 220 V. Armature resistance Ra=0.5 Ω. Armature current Ia=20 A.

Q: Mechanical losses represent: A. Windage losses B. None of the other choices are correct O C. Losses…

A: In this answer let us try to understand what are mechanical losses as explained below.

Q: (1) What is the armature current IA for EA= (A-10)V (2) What is new value of EAnew, at C/5 percent…

A: RA=0.25Ω ;VT=A=436 V ;EA1=A-10=426V ;1 IA1=?  for  EA=A-10 C=7, ∴C/5=7/5=1.4% decrease ∴ϕ2=0.986ϕ1 2…

Q: Explain the construction of AC serve motor, also draw its diagram.

A: Construction AC servo engines are fundamentally two-stage squirrel confine acceptance engines and…

Q: A 220 V DC series motor runs drawing a current of 30 A from the supply. Armature and field circuit…

A: It is given that:

Q: A four-pole, lap-would DC machine has 462 conductors in the armature. The average flux per pole is…

A:

Q: The factors effecting the speed of dc motor are The flux p and the voltage across the armature The…

A: The factor affecting the speed of the dc motor is as follows; N=V-Ia RaϕN= speed of dc…

Q: A 250 V series motor has an armature resistance of 0.2 ohm and a series-field resistance of 0.18…

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Q: .Find the torque when armature current is halved a. 20 N-m b. 5 N-m c. 40 N-m d. 10 N-m

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Q: A shunt would dc machine has an armature resistance of 0-12  and a field resistance of 100  . The…

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Q: which is the best method for reducing armature reaction O a. Using High reluctance pole time O b.…

A: In this question,  Choose the correct option Which is the best method for reducing armature…

Q: ) A dc shunt machine while running as generator develops a voltage of 240 V at 1000 rpm. on no-los…

A: In this question we will find speed and efficiency of dc motor....

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Q: The current drawn by 220 V dc shunt motor of armature resistance 0.5 ohm and back emf 200 V is

A: Given, A DC shunt motor having Supply voltage, V=220 V Armature resistance, Ra=0.5 Ω Back emf,…

Q: A 220 V dc machine has an armature resistance of 1ohm if the full load current is 20 A, the…

A: Armature induced EMF=Terminal voltage ± drop in armature resistance drop in armature…

Q: A 220 V permanent magnets DC motor has an armature resistance of 0.5 0. If the full load armature…

A: Given data, Terminal voltage V = 220 V. Armature resistance Ra=0.5 Ω. Full load armature current…

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.