Influence of Coated Electrode in Nanopowder Mixed EDM of Al–Zn–Mg–Si₃N₄ Composite

Table 7

ANOVA of EWR.

Source	DF	Adj SS	Adj MS	F value	value
Electrode	1	0.042491	0.042491	3.5	0.0098
Current (A)	2	0.033721	0.016861	1.39	0.0304
Voltage (V)	2	0.02381	0.011905	0.98	0.0416
Pulse on time (µs)	2	0.036301	0.018151	1.49	0.0281
Capacitance (nF)	2	0.00286	0.00143	0.12	0.0389
Error	8	0.097155	0.012144
Total	17	0.236339