True RMS is an accurate measure of modified sinewave

True RMS is an accurate measure of modified sinewave
Yes, true .. that tool named ohmmeter or multimeter, but not the usual but rather a multi-meter multimeter with true RMS facility, because if you measure the output power of modified sine wave inverter with a multimeter is not the usual result SURE but 190Volt 220Volt

Therefore if you have a modified sinewave power inverters you must measure it with a multimeter TRUE RMS facility in order to obtain accurate results for 220Volt