A dc shunt motor runs at 600 rpm on a 240V supply while drawing a line current of 30 A. Its armature and field resistances are 0.5 ohm and 120 ohms respectively. What is the resistance should be placed in series with the armature circuit in order to reduce the speed to 400 rpm. Assume no changes in the armature or field current

Q: A 220 V dc shunt motor draws a current of 50 A from the supply and runs at 900 rpm. Its armature and…

A:

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

A: The Dc motor is electrical machinery that converts electrical and mechanical energy

Q: A 500 V D.C. shunt motor having an armature resistance of 1 ohm draws an armature current of 120 A…

A:

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

A: The solution can be achieved as follows.

Q: In a spinning industry, a 215 V, 4 pole shunt motor runs at a speed of 1300 rpm gives an output of 8…

A: In this question we will find dc shunt motor torque , flux etc...

Q: Consider a shunt DC motor with an armature resistance RA=0.2 ohm and terminal voltage VT = 160 V.…

A: Given Data: VT = 160 V Ra = 0.2 ohm Ia = 60 A N = 1517 rpm Ploss = 848 Watt

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.