A four-pole de machine has an armature of radius 12.5 cm and an effective length of 25 cm. The poles cover 75% of the armature periphery. The arma- ture winding consists of 33 coils, each coil having seven turns. The coils are accommodated in 33 slots. The average flux density under each pole is 0.75T. If the armature is lap-wound, Determine the induced armature voltage when the armature ro- tates at 1000 rpm.

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 three-phase A-connected six-pole winding is installed in 36 slots on a stator. There are 150…

A: Introduction A three-phase delta-connected system is a type of electrical power distribution…

Q: SOLVE AND SHOW YOUR COMPLETE SOLUTION. ANSWERS SHOULD BE IN TWO DECIMAL PLACES. The armature of a…

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: Maximum torque is realized when an armature winding is with the magnetic field at 90° O inline or at…

A: With reference to synchronous machines, the load angle or the power angle is the angle between the…

Q: electromotive force created by a direct current generator is proportional to Flux/pole…

A: We need to tell about generated emf . We know direct formula for emf .

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.