Transmitting the readings of instruments to a remote location by means of wires, radio waves, or other means. Also known as remote metering; telemetry.

To obtain and transmit measurements from a distance, usually a great distance. For example, measuring the amount of moisture on the surface of the planet Mars and sending that information back to a station on earth would be an exercise in telemetering.

P. A. Borden has written:

'Telemetering systems'

This depends on the situation; often CTs are not required. They may be necessary for relaying or metering; I believe some telemetering schemes sample from a CT as well.

to produce sustained oscillations without any ac input.it is nothing but an amplifier with positive feedback and without input.it just converts the noise in the circuit and amplifies it to produce oscillations.