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1) Volume (cyfaint) is associated with a) m³ b) m c) m² d) 10 2) Micro-hydro uses what to generate electricity a) air b) water c) the sun d) the moon 3) The best conductor is? a) gold b) copper c) silver d) carbon 4) Which of the following is an insulator? a) air b) aluminium c) carbon d) steel 5) A fuse and an electric kettle operate through a) thermal b) magnetism c) chemical d) nuclear 6) Conventional current flows from a) negative to positive b) positive to negative 7) Which of the following is a constant value and is normally measured as mΩ/m? a) resistance b) resistivity c) roadkill d) resistor 8) An autotransformer has only a) one winding b) two windings c) three windings 9) A typical application for a DC Series motor is a a) electric hand drill b) elevator c) assembly line 10) An Ohm meter measures a) resistance b) high ohms only c) low ohms only 11) A domestic property requires a) 3 phase & neutral b) 230 V single phase supply c) 3 phase 12) An excessive long cable could result in which of the following?  a) volt drop b) current drop c) power drop d) resistance drop 13) If we balance loads equally between 3 phases, it will make the neutral current                     a) smaller b) bigger c) fatter 14) Which protective device detects an imbalance between line and neutral? a) Circuit breaker b) Fuse c) RCD 15) The negative aspect of an atom is called? a) proton b) electron c) neutron 16) Which of the following is known as the opposition to current flow?   a) resistance b) voltage c) current d) power 17) A fluorescent lamp produces light by passing  a) current through its tube b) current through the phosphorous c) current through its gas 18) A solenoid operates through a) magnetism b) heat c) chemical 19) In the star connected 3 phase system a) Line voltage equals phase voltage b) Line current equals phase current


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