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Diode is a Two terminal device which allows flow of curent in forward direction that means it converts DC to AC
The scientists were not certain that their device would work correctly. Mistaken identity is a common plot device in mysteries.
voltmeter
mechanism, device, machine, instrument, appliance, contrivance, gadget
It means a tower. Hope it helped you.
He/she confines me away from my family and friends.
A "cell" (word for part of a battery) is a source of current flow.A diode is a device that restricts current flow to one direction.
Convergence
Ear
Possibly this is an altered form of the word calibrate, which means to adjust the scale on a measuring device, for accuracy.
The word for this device is an "odometer" from the Greek roots hodos (path) and métron (measure).
It means a small specialized mechanical device.
the word pulley device that for easy movement of objects
The definition of confines, meaning something that encloses. Confine can also mean that you can hold someone in a haunted house for the night, and stay in a limited location in the house.
Impediments, obstructions, obstacles, blockades, confines...
That would be scope.
That would be scope.