Test: Copper Alloys & Die Casting Alloys - Mechanical Engineering MCQ

Posses excellent thermal and electrical conductivity

Can be easily cast and machined

Has good corrosion resistance

All of the mentioned

bronze

gunmetal

monel metal

each of the mentioned

Brass is costlier then copper

Brass has excellent corrosion resistance

Brass has good machinability

Brass has poor thermal conductivity

strength of brass increases and ductility decrease

strength of brass increases and ductility increase

strength of brass decreases and ductility increases

strength of brass decreases and ductility decreases

contain 5-10% aluminium

excellent corrosion and is also called imitation gold

difficult to cast

all of the mentioned

contains 0.2% phosphorus

phosphorus increases tensile strength

use for worm wheels and bearings

all of the mentioned

10,2

2,10

4,5

5,4

32,65

65,32

20,80

80,20

this process consists of forcing the molten metal into a closed metal die

process used for a metal with low melting point

surface finish is excellent

all of the mentioned