In a DC generator, let P be the number of poles, Φ be the flux per pole, Z be the number of armature conductors and A be the number of parallel paths in armature. If the generator runs at N rpm, then the generated emf per parallel path is:

• A. \( \frac{{ZP\phi N}}{{\pi A}}\) V
• B. ​​\( \frac{{ZP\phi N}}{{120\;A}}\)​ V​
• C. \( \frac{{2\pi ZP\phi N}}{{60\;A}}\)V
• D. ​​\(\frac{{ZP\phi N}}{{60\;A}}\) V