A coil is connected to a 100v a.c with 20ms, and supply current taken by the coil is 6a calculate the frequency (50Hz) the overall impedence (16.6 ohms) inductive reactance and inductance of the coil
Calculate the power factor and phase angle of the coil
Sketch a wave form of the voltage/current values which you have just calculated over two complete cycles and use this to explain why the current of an R-L circuit is said to be out of phase by the angle calculated
g) A capacitor is to be connected in parallel with the coil. If the capacitive reactance has the same value, in ohms, as the inductive reactance calculated above, calculate the value of the capacitor needed
If a capacitor is of a higher value is added explain what would happen to the voltage/current phase relationship
If the frequency was increased to 10l3 Hz what would be the new reactance of the capacitor from G above
Calculate the power factor and phase angle of the coil
Sketch a wave form of the voltage/current values which you have just calculated over two complete cycles and use this to explain why the current of an R-L circuit is said to be out of phase by the angle calculated
g) A capacitor is to be connected in parallel with the coil. If the capacitive reactance has the same value, in ohms, as the inductive reactance calculated above, calculate the value of the capacitor needed
If a capacitor is of a higher value is added explain what would happen to the voltage/current phase relationship
If the frequency was increased to 10l3 Hz what would be the new reactance of the capacitor from G above
