A certain four pole simplex lap wound dc generator has a 768 armature conductors and revolves at 20rps. If the flux per pole= 715000 Maxwell, calculate the generated voltage. Discuss

A 6 pole DC wave wound generator has 41 armature conductors with Flux per pole is 26 mWb and the e.m.f generated is 79 V, then the speed of machine is ?

Flux is exactly proportional to L2 times field current in a d.c generator. The generator operates at a speed of 200 revolutions per minute and has a flux of 30 mWb.f per pole. The generator is lap wound with 600 conductors in series; determine the e.m.f. produced. If the winding is wave wound, calculate the change in excitation current required to get the same voltage as previously stated. The machine has six poles.

An 6-pole d.c. generator has 515 armature conductors, and a useful flux of 10 mWb per pole. What will be the e.m.f. generated if it is lap-connected and runs at 970 rpm? What must be the speed at which it is to be driven produce the same e.m.f. if it is wave-wound? Eg Speed

A 4 pole armature of a DC machine has 175 conductors and a flux per pole of 0.1 wb. Find the EMF generated when running at 600 rpm, when the armature is Lap wound.

A D.C. shunt wound generator running at constant speed generates a voltage of 120V at a certain value of field current. When flux is reduced by 10% calculate the new value of flux Estimate the change in the generated voltage when the field current is reduced by 10%, assuming the flux is proportional to the field current.

A separately-excited dc generator develops 288 volts at a certain flux and at a certain speed. What should be the new generated voltage in volts for this machine if the speed is changed to 85 % of the original value and the flux is increased by 67 % from the original value?

The armature of a two-pole generator is rotating at 3600 r/min. The armature has a simplex lap winding with a total of 1504 conductors. Determine the generated voltage when the flux per pole is 600,000 x 10-8 Wb. 5.5

Develop a simple Lap Windings for DC MACHINE. Provide a winding table Given: 4 Pole, Pole Pitch=9, progressive Windings

The armature of a d.c. generator consists of 40 coils and each coil has 20 turns. When the armature is rotated at 200 rad/s in a 4-pole field structure having a flux of 5 mWb/pole and there are four paths in the armature, calculate (i) number of armature conductors (ii) the voltage between brushes generated by the armature.