In which process the cross section of the metal is reduced by forcing it to flow through a die under high pressure?

• Forging

• Forming

• Extrusion

• Welding

Which of the following is a type of extrusion process?

• Direct

• Indirect

• Impact

• All of the mentioned

Which of the following is true about the extrusion process?

• Structure is homogeneous

• No time is lost in changing the shape

• Service life of extrusion tool is too high

• Its leading end is in good shape as compared to rolling

In which extrusion process the direction of flow of metal is in same direction as that of ram?

• Direct

• Indirect

• Impact

• Hydrostatic

In direct extrusion process at higher temperature which of the following is used to avoid friction?

• Oil

• Lubricants

• Molten glasses

• Wax

Which of the following is not used because of the problem of handling extruded metal coming out through moving ram?

• Direct

• Indirect

• Impact

• Hydrostatic

Which of the following is not a cold extrusion process?

• Cold extrusion forging

• Impact extrusion

• Hydrostatic extrusion

• Cold rolling

In which of the following process frictional loss is eliminated at the billet container interface?

• Direct

• Indirect

• Impact

• Hydrostatic

In which of the following process fluid medium is used to apply the load on the billet?

• Direct

• Indirect

• Impact

• Hydrostatic

Extrusion is similar to?

• Rolling

• Forming

• Welding

• Casting