(a) What is the rated torque given conditions: a DC machine with no-load speed 6800 rpm, rated supply voltage 43V, resistance 2.5 ohms and rated current 2.2 A.

Q: d.c. series motor has a wave wound armature with 180 conductors. The armature resistance and the…

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Q: A shunt DC generator has no load terminal voltage of 140V. Armature resistance is 1ohm and shunt…

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Q: 1.- The production of a force in a conductor carrying current that is inside a magnetic field, is…

A: 1.- The production of a force in a conductor carrying current that is inside a magnetic field, is…

Q: Types of DC Generators 1. The armature of a separately-excited DC generator has 0.06 effective…

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Q: A long compound DC generator feeding a load of current 100 A, at a voltage of 230 V. Calculate the…

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Q: A 4 pole machine generates 250 volts when operated at 1500 rpm. If the flux per pole is 1.85 x…

A: It is given that: P=4Ea=250 voltsN=1500 rpmϕp-p=1.85×106 maxwell=1.85×106×10-8WbA=2no. of armature…

Q: A 5 kW 125 V shunt generator operates at 1800 r/min If the field current is 1.8 A and the armature…

A: Output power Terminal voltage Field current Armature resistance

Q: A shunt DC motor is supplied by 520V terminals voltage and is used to supply a mechanical load with…

A: The solution can be achieved as follows.

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.