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Portable Network Graphic  |  1996-10-15  |  31.4 KB  |  257x428  |  8-bit (70 colors)
   ocr: imagine...1. A fan is connected to an electric motor. When the motor. is switched off there is no voltage and the fan does not move. When the motor is switched on there isa voltage of six voits and the motor moves at constant speed. What we needt to acheive is a slowing down of the motor while maintaining the voltage at six volts. This will provide a larger torque at slow speeds and thus we: can meet the design brief. click the switch to see the effect ofs switching on six volts.