Annotation: The article suggests dynamic mechanical model allows to simulate dynamic processes start and "pounced" load on the shaft of the induction motor, as well as to determine the starting points in the various laws regulating the speed of automatic control systems.

Key words: asynchronous motor, simulation, mechanical characteristic, voltage, frequency, engine idling, starting torques.

Annotation: The article, based on an analysis of existing light sources used in industrial, civil and residential buildings, the study shows the noise characteristics and the electromagnetic radiation of low pressure fluorescent lamps.

Key words: light, fluorescent lamp, lighting, the frequency spectrum of the radiation, noise, electromagnetic radiation measurement range.

Summary. In article, on the basis of the analysis of the existing light sources used in industrial, civil and in household rooms, characteristics of modern luminescent lamps of low pressure with electronic input-regulate devices are investigated.

Key words: light, illumination, fluorescent lamps, man, ultrasound.