How to calculate back pitch, front pitch, commentator pitch?, Electrical Engineering

Q. A 6 - pole, DC armature with 36 slots and 2 coil - slides/slot is to be wave wound (double layer). Calculate the back pitch, front - pitch and commentator pitch. How many dummy coils, if any are required? 

Ans. 

Given

                           C = 36

 

                           P = 6

 

                           C = P/2Yc ± 1

 

                           36 = 6/2 Yc ± 1

 

                           36 = 3Yc ± 1

 

   Let                    Y = 12 then

 

                            C = 3 ×12-1

 

                                = 35

 

SO we choose C = 35 which actually 36 coils be accommodate

 

                           Yes = S/P = 36/6 = 6

 

                           YB = 2YCS + 1

 

                          YB = 2 × 6 + 1

 

                          YB = 13

 

                         YF = 2Y - YB = 2 ×12 - 13 = 11

Posted Date: 7/23/2012 1:26:46 AM | Location : United States







Related Discussions:- How to calculate back pitch, front pitch, commentator pitch?, Assignment Help, Ask Question on How to calculate back pitch, front pitch, commentator pitch?, Get Answer, Expert's Help, How to calculate back pitch, front pitch, commentator pitch? Discussions

Write discussion on How to calculate back pitch, front pitch, commentator pitch?
Your posts are moderated
Related Questions
Q. Error specifications on a 10-A digital ammeter are given as 0.07% of the reading, 0.05% of full scale, 0.005% of the reading per degree Celsius, and 0.002% of full scale per deg

purpose of equalizer rings in lap winding

i want to know the all the three jfet in present and future use and desing for each component

Charge and Electric Force The proton has a charge of +1.602 10 -19 coulombs (C), while the electron has a charge of -1.602 × 10 -19 C. The neutron has zero charge. Electric c

Questions: (a) Suppose a 100 kHz switching power supply. (i) Evaluate the magnitude of the wave impedance of the radiated field of a very short wire in the switching power s

different types of probes used in multimeter

A single-phase source delivers 100 kW to a load operating at 0.8 lagging power factor. In order to improve the system's efficiency, power factor improvement (correction) is achieve

Q. An 8 - pole dc generator has 500 armature conductors and has a useful flux per pole of 0.065 web. What will be the emf generated if it is lap connected and runs at 1000 r.p.m.

The variable resistor Z o in the circuit shown in Fig. 1  is adjusted until maximum average power is delivered to Zo. a)  Find the value of Z o b)  Calculate the maximum av

Given that , f(a,b,c,d,e) = Σm (6,7,9,11,12,13,16,17,18,20,21,23,25,28) using a Karnaugh map. (i) Find the essential prime implicants (ii) Find the minimum sum of product