During the manufacturing of a casting, the purpose of a riser is:

Related MCQs

• What additional surface preparation or cleaning must be performed on a machined or ground aluminium casting prior to penetrant testing?
• Which of the following discontinuities would you not expect to find in a casting?
• Which type of casting is made in a metal mould?
• A casting flaw which is formed when two masses of molten metal flowing from different directions flow together, but fail to fuse, is called:
• The main reason for using a casting is that:
• When a casting is being non destructively examined for critical service, and the possibility of cracks exists, which of the following techniques would be best?
• Dark rounded indications with rather smooth edges appear on the radiograph of casting made in sand mould. These indications would be interpreted as:
• A dark, jagged, linear indication appears on a radiograph of a casting. The area is a transition area between a thick and a thin section. This indication should be interpreted as:
• A good Cobalt-60 shot is made on a 7.6 cm (3 inches) steel casting using an exposure time of 10 minutes and a source-to-film distance of 91.5 (36 inches). If it is necessary to change the source-to-film distance to 61 cm (24 inches), what exposure time would produce a similar radiograph if all other conditions remain the same?
• The purpose of using a developer is: