Progress test

Give the Russian equivalents to the following words and phrases.
1.alternating motor
2.direct current
3.electrical powerhouse
4.high voltage experiments
5.induction motor
6. not to make a dime off sth
7.patent for an invention
8.polyphase principle
9.radio-controlled automation
10.robotics
11.schematic diagram
12.severe disadvantage
13.spark
14.terrestrial stationary waves
15.to announce a discovery
16.to be ahead of one’s time
17.to be an inventor on one’s own right
18.to be fascinated with
19.to conceive an invention
20.to do sth from scratch
21.to draw a sketch
22.to figure out the principle
23.to foresee interplanetary communications
24.to inspire young people
25.to make improvements to
26.to minimize power loss
27.to operate a device
28.to specialize in a field of science
29.to supply with energy
30.to visualize a device