Open circuit (OC) and short circuit (SC) tests on an AC generator are conducted under the condition, OC test at zero armature current and SC test at reduced flux O True O False

(a) A 4 pole generator with wave wound armature has 85 slots each having 10 conductors. The flux per pole is 26 mWb. At what speed must the armature rotate to give an induced EMF of 220V. (b) What will be the voltage developed, if the winding is lap connected and the armature rotates at the same speed

(iv) Define two parameters which are indices of performance of a DC generator and there values affect the performance of the generator?

(a) A 6 pole generator with lap wound armature has 135 slots each having 14 conductors. The flux per pole is 20 mWb. At what speed must the armature rotate to give an induced EMF of 210V. (b) What will be the voltage developed, if the winding is wave connected and the armature rotates at the same speed

Problem #1: A 6-pole, 3-phase, Y-connected, 60-Hz alternator has 12 slots per pole and 4 conductors per slot. The winding is 5/6 pitch. There are 0.025 Wb entering the armature from each north pole, and this flux is sinusoidally distributed along the air gap. The armature coils are all connected in series. Determine (a) pitch factor (b) distribution factor (c) induced emf per phase

(a) A 4 pole generator with wave wound armature has 65 slots each having 14 conductors. The flux per pole is 20 mWb. At what speed must the armature rotate to give an induced EMF of 225V. (b) What will be the voltage developed, if the winding is lap connected and the armature rotates at the same speed