لینک پاورپوینت خطرات برق وکنترلElectrical Hazards and Control

پاورپوینت خطرات برق وکنترلElectrical Hazards and Control 33اسلاید به زبان انگلیسی Electricity:- Introduction     Each year  in the UK there are:- 30 workplace deaths 30 domestic deaths •Electric shock •Electric burns •Electrical arcing •Fires •Explosions   Volts (Pressure difference):- The unit of measurement of electrical pressure Amps (Current):- The unit of measurement of flow Ohms (Resistance):- The unit of measurement of resistance     Direct Current (DC):- The current flows in one direction between positive and negative terminals Alternating Current (AC):- The electric current is constantly reversing its direction of flow at a given frequency Frequency:- Measured in cycles per second is expressed in Hertz in UK 50 cycles per second   ...

پاورپوینت خطرات برق وکنترلElectrical Hazards and Control,پاورپوینت خطرات برق وکنترل برای پشتیبانی و خرید فایل به سایت فروشنده مراجعه بفرمائید