normal aorta
An oscilloscope.
A fartometer
An ECG (Electrocardiography) machine.
Dynamo
defribrillator
A generator.
Electric generator. May be a dynamor or a cell.
If you mean the name of the machine used to create static electricity - it's called a 'van de graaff' generator.
The machine that graphs earthquakes is called a seismograph. It measures the motion of the ground caused by seismic waves generated by earthquakes.
I think your talking about the machine they use outside your body, placed on your chest and it shows a picture of your heart on a screen? This would be called an Ultrasonagraphy machine. The test is nearly always done by a certified ultrasonagrapher who knows how to read what is showing on the screen.
If a photocopier is not making copies there is something missing. No paper, no toner, no electricity, paper jam within the machine to name a few.
If this question is asking about the box supplied by your utility company which counts the kilowatt.hours you used, so they can send you a bill for electricity, it is called an electricity meter. If you are asking about the name of the standard unit used to measure a quantity of electricity used, it is called the kilowatt.hour (or k.Wh for short.)