For a pantograph write any twoi)Types ii ) Advantages iii ) Methods of raising iv ) Materials of collector strip
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Ans: i) Types – a) Diamond Type Pantograph b) Faiveley Type Pantograph 

ii) Advantages – a)Reversible operation is possible b)current collection capacity is high 

iii) Methods of raisinga) Air raised b) Spring raised 

iv) Materials of collector stripcopper, copper steel combination, silicon manganese steel ,aluminum steel, bronze, Metallized carbon or carbon
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