EMAT

1. What is the main characteristic of ferrous metals?                                                        

2.  

• 1.  a) They are lightweight

• 1. b) They are non-magnetic

• 1. c) They are iron-based

• 1. d) They are resistant to corrosion

1. Which of the following metals is considered non-ferrous?                                             
   
   
   

• 1. a) Steel

• 1. b) Aluminum

• 1. c) Cast iron

• 1. d) Stainless steel

1. What is the primary alloying element in carbon steel?                                                  
   
   
   

• 1.  a) Chromium

• 1. b) Nickel

• 1. c) Copper

• 1. d) Carbon

1. Which metal is widely used for ship propellers due to its corrosion resistance?
   
   
   

• 1. a) Copper

• 1. b) Bronze

• 1. c) Aluminum

• 1. d) Stainless steel

1. Which of the following is a key disadvantage of ferrous metals in marine applications? a) High strength
   
   
   

• 1. a) High strength

• 1. b) Heavy weight

• 1. c) High cost

• 1. d) Poor electrical conductivity

What makes non-ferrous metals like aluminum ideal for ship superstructures?

• a) High strength

• b) High density

• 
  c) Low corrosion resistance

• d) Lightweight and corrosion resistance

1. Which non-metal material is commonly used for insulation in ship cabins?
   
   
   

• 1. a) Stainless steel

• 1. b) Ceramics

• 1. c) Polymers

• 1. d) Aluminum

1. What property makes ferrous metals ideal for load-bearing parts on ships?
   
   
   

• 1. a) High corrosion resistance

• 1. b) High tensile strength

• 1. c) Low density

• 1. d) Non-magnetic nature

1. Which of the following materials is prone to developing rust?
   
   
   

• 1. a) Cast iron

• 1. b) Bronze

• 1. c) Polymers

• 1. d) Copper

1. In which of the following applications are non-metals like ceramics typically used in ships?

• 1. a) Engine parts

• 1. b) Electrical wiring

• 1. c) High-temperature insulation

• 1. d) Anchors