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Induction furnace: Quiz


Question 1: Induction furnace capacities range from less than one kilogram to one hundred tonnes capacity, and are used to melt iron and steel, copper, ________, and precious metals.

Question 2: ________ - for another type of electric furnace, used in larger foundries and mini-mill steelmaking operations
AluminiumCarbonElectric arc furnaceIron

Question 3: An induction furnace is an electrical furnace in which the heat is applied by induction heating of a conductive medium (usually a metal) in a crucible placed in a water-cooled ________ solenoid coil.
TransformerAlternating currentElectricityElectric current

Question 4: Most modern foundries use this type of furnace and now also more iron foundries are replacing cupolas with induction furnaces to melt ________, as the former emit lots of dust and other pollutants.
Cast ironAlloy steelSteelWrought iron

Question 5: Generally the smaller the volume of the melts the higher the frequency of the furnace used; this is due to the ________ which is a measure of the distance an alternating current can penetrate beneath the surface of a conductor.
X-rayMicrowaveSkin effectElectromagnetic radiation


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