Related Questions

The aluminium alloy is used in cylinder blocks because
A It is lighter and has good heat dissipation characteristics
B Material cost is low
C It does not require any cylinder liners
D The piston is also made of aluminium alloy
Aluminium bronze contains aluminium and copper in the ratio of
A 50 : 50
B 40 : 60
C 60 : 40
D 10 : 90
The machinability of aluminium increases when _________ is added to aluminium.
A Copper
B Magnesium
C Silicon
D Lead and bismuth
The aluminium alloy, mainly used, for anodized utensil manufacture, is
A Duralumin
B Y-alloy
C Magnalium
D Hindalium
Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio
A 50 : 20 : 20 : 10
B 40 : 30 : 20 : 10
C 50 : 20 : 10 : 20
D 30 : 20 : 30 : 20
Duralumin is an alloy of aluminium and copper. Percentage of copper in duralumin is
A 38
B 26
C 16
D 4
Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its
A High strength to weight ratio
B Low temperature strength properties
C Its ability to be cast, rolled, forged & stamped
D High strength and corrosion & oxidation-resistance at elevated temperature
Perminvar alloy having constant permeability is an alloy of
A Nickel, copper and iron
B Nickel, copper and zinc
C Copper, nickel and antimony
D Iron, zinc and bismuth
The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.
A Less than
B Equal to
C More than
D Either B or C; depends on the type of alloy
Constantan an alloy used in thermocouples is an alloy of
A Copper and tin
B Copper and zinc
C Copper and iron
D Copper and nickel

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