A laser beam is a form of electromagnetic radiation, in the visible spectrum. At a lower frequency there are microwaves, which can be directed in narrow beams, and can be intercepted by an antenna and then converted back to an electric current. I don't recognise your idea of controlling beams of high voltage however.
through the X-ray machine
It depends on the internal circuit of the machine. If it is star operated its full load current will be same as rated current. If it is Delta operated its full load per phase current will be as given below : Phase current = Line Current / 1.732
It depends. Check the back of the machine. There will be a sticker that says the voltage and current rating. It may already say the wattage, but if it doesn't, multiply the voltage by the current. Remember milliamps are .001 A. So if the voltage rating on the slushy machine is (I doubt the current is this low) 120 and the current is 500mA, then the wattage is 60W. Its likely that the voltage rating be something like 125 and the current 4A, but I've never used one, so just use the P=VI formula.
how many watts for usage xerox machine: 650 watt-1500wattapproximately.for current rating of difference device this rating can be varied.
This is not a good idea. The washing machine current will surge when motor is started. a 20 Amp dedicated circuit is recommended for a washing machine.
"What is alternating current machine?"
sonar
A machine that runs on an alternating current.
Scanning tunneling electron microscope
I think it is an alternating current :)
to reduce the eddy current loss in the machine
because the waves are sent back to the machine as sound
generator
The current marketing slogan for BMW is The Ultimate Driving Machine.
A Vacuum Saction machine uses Alternate Current AC
Yes, it is normal for a welding machine to convert AC voltage to a DC voltage.
Astronomers analyze the light reflected from comets with a machine, and can easily tell what major elements it is composed of.