Hydraulic power steering Is an auxiliary system that uses the #engine#power to change the angle of the wheel axis and thus change the direction of the #car by the hydraulic pressure provided by a hydraulic pump driven by the vehicle’s engine .
The cars need to have a #clutch. The reason is that the #engine stays rotating while the wheels are stop at the same time , Thus there is no need to turn off the engine when you need to stop the wheels from moving. In addition, the
#Electric arc #welding is done by #heat generated by the electric arc between electrode and metal, The electric arc is the discharge of electrical charges through a gap between the conductors and the temperature of the electric arc up to 5000 degrees Celsius is enough to melt #iron and its alloys.
The #solar#heater is a device for converting solar radiation #energy into #thermal energy used in heating #water for home purposes and warming . The solar heater consists of the following sections: #Storage tank – Sun ray collector – Accessories