_______________ does not contain tin as an alloying material?
A. Brass
B. Pewter
C. Solder
D. Babbitt metal
Materials and Construction
Cast iron is a ______________ material?
Cast iron is a ______________ material?
A. Brittle
B. Ductile
C. Tough
D. Malleable
Presence of even 0.005% of _____________ in copper makes it highly brittle, rendering it useless for wire-drawing?
Presence of even 0.005% of _____________ in copper makes it highly brittle, rendering it useless for wire-drawing?
A. Oxygen
B. Arsenic
C. Antimony
D. Bismuth
_____________ is added in low carbon steel to raise its yield point?
_____________ is added in low carbon steel to raise its yield point?
A. Sulphur
B. Phosphorous
C. Silicon
D. Manganese
Age hardening is concerned with_________________?
Age hardening is concerned with_________________?
A. Copper
B. Brass
C. Duralumin
D. Silver
Thermosetting polymers are_________________?
Thermosetting polymers are_________________?
A. Injection moulded
B. Cast molded
C. Extruded
D. None of these
A material is called ‘ductile’, if it can be__________________?
A material is called ‘ductile’, if it can be__________________?
A. Drawn into wires
B. Hammered to a thin sheet
C. Fractured without deformation
D. Made lustrous by heating it
A material capable of undergoing large permanent deformation, when subjected to tension is termed as___________________?
A material capable of undergoing large permanent deformation, when subjected to tension is termed as___________________?
A. Friable
B. Ductile
C. Brittle
D. None of these
Corrosion involves exchange of electrons in ____________ corrosion?
Corrosion involves exchange of electrons in ____________ corrosion?
A. Chemical
B. Electrochemical
C. Both A. & B.
D. Neither A. nor B.
Brass tubes are used in the manufacture of tubes of evaporators used in sugar and salt industries, mainly because of its ______________________?
Brass tubes are used in the manufacture of tubes of evaporators used in sugar and salt industries, mainly because of its ______________________?
A. High co-efficient of thermal expansion
B. Low thermal conductivity
C. High corrosion resistance
D. All A., B. and C.