According to the SI unit analysis, what is the value of the pole pitch with a P=4 and a mean air gap radius of 0.5 mm? 2. .What is the force condition concerning B, Ic, l, Zr (r= mean air hole sweep)? 3. According to equation 4, what is the value of Np in an average coil emf for ten armature conductors with two parallel paths? The DC machine's emf and torque are inversely proportional to _________ and _________, respectively. 5. in a 4-shaft DC machine having motion/post equivalent to 0.1 wb pivoting at 1500 rpm and negative. What is the average coil emf generated when there are 100 sides to a coil? Normal curl emf for 20 loop turns (E1) and 40 curl turns (E2), will have proportion E1/E2=____ (expecting any remaining boundaries same for the two machines).

7. non-zero armature current (E2) can be connected as Emf delivered by DC machine, for zero armature current (E1);how is this conceivable 8.justify that; In a DC machine 9, the armature's rotation has no effect on the average amount of energy stored in the magnetic field. 10.Explain the same-direction conductor emf as expressed by mode machine operating technique. The nature of the flux density wave in the air gap is: