Electric engineering 1,755 Electrical engineering 803 Electronics 402 Mathematics 179 Safety measures 169 Engineering 154 Electric circuits 139 Electric apparatus and appliances 107 Electric wiring 96 Electric power systems 78 Insurance requirements 78 Standards 73 Materials 71 Electricity 70 Study and teaching 68 Examinations, questions, etc 59 Electromagnetism 55 Safety regulations 54 Computer engineering 51 High voltages 49 Problems, exercises, etc 48 Renewable energy sources 45 Computer science 43 Direct current 41 Electric machinery 41 Mechanical engineering 41 Mathematical models 36 Electricians 34 Engineering mathematics 31 Industrial safety 31