LEARN ELECTRICAL

ELECTRICAL POWER TOOLS (1) DRILL MACHINE Hand-Held Bench Type Drill Machine (2) GRINDER MACHINE Angle Type Straight Grinder Machine Bench Type Grinder Machine  (3) SOLDERING IRON (4) HEAT GUN (5) CUT-OFF MACHINE (6) DEMOLITION HAMMER (7) ELECTRICAL AIR BLOWER Hand-Held Portable (8) HYDRAULIC CRIMPING TOOL (for lugs punching) Page No. 15

CAPACITANCE The ratio between electric charge and voltage Q/V is called capacitance. The unit of capacitance is ‘Farad’. Electric charge (Q) unit is coulomb. The farad (F) is a very large unit and in practice capacitance are usually measured in uF (Micro Farad) or (Pico Farad) pF. 1 Farad                 =             1/1000 000          =             10 uF Capacitor: The component possessing the property of capacitance is called capacitor. there are tow types of capacitor; (1)Fixed Capacitor (2) Variable capacitor Page No. 14