Daily test 24.06.2020
"Which non ferrous metals, tensile strength can be increase by hammering or rolling?"
A. lead
B. copper
C. tin
D. zinc
Copper 93% tin % phospherous 1% is the composition of
"a. Aluminium bronze"
"b. magnanese bronze"
"c. phosphor bronze"
D. Silicon bronze
"An alloy +98:121 is made up to 8% copper and 20% tin. It is used to make…………."
A. bell
"b. Contact blade"
C. Valve spindle
D. Valve body
" Name of the metal whose composition is copper 45% lead 30% antimony 15% tin 10%"
A. Lead bronze
B. Bell bronze
C. White metal
Monel metal
Which of the following metal has a low melting point
A. aluminium
B. brass
C. lead
D. copper
Bearings are made out of …………….
A. Lead alloy
B. Tin alloy
C. Zinc alloy
D. Copper alloy
solder is an alloy of ……………..
"a. Zinc and lead"
B. Tin and lead
"c. Lead and antimony"
"d. Tin and aluminium "
The melting point of aluminium is ………….
A. 3600c
B.5600c
C.6500c
D.8100c
The rubber do not have this property name it
A.elasticity
B.malleable
C.brittleness
D.shock resistance
In which one battery container is made of
A. fibre
B. Hard rubber
C. porcelain
D. asbestors
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