1-18/8 stainless steel contains
(a) 18% stainless, 8% chromium.
(b) 18% chromium, 8% nickel.
(c) 18% tungsten, 8% nickel.
(d) 18% tungsten, 8% chromium
.
2-The alloy steel designated as 40 Cr18 Ni 2 by Bureau of Indian Standards contains
(a) 0.4% C, 18% Cr and 2% Ni
(b) 4.0% C, 1.8% Cr and 0.2% Ni
(c) 0.4% C, 1.8% Cr and 2% Ni
(d) 0.4% C, 1.8% Cr and 0.2% Ni
3-Which one of the following elements is a ferritic stabilizer?
(a) Nickel
(b) Manganese
(c) Copper
(d) Chromium
4- Which one of the following elements is an austenitic stabilizer?
(a) Chromium
(b) Tungsten
(c) Nickel
(d) Molybdenum
5-Small percentage of boron is added to steel to
(a) Increases hardenability
(b) Reduce machinability
(c) Increases wear resistance
(d) Increase endurance strength
6-Some high speed steels have cobalt (Co) added to them in amounts ranging from 2% to 15%, since this element improves the
(a)Cutting efficiency, especially at high temperature
(b) Depth hardening ability of the HSS tool
(c) Red hardness of the HSS tool
(d) Grain structure of the HSS tool
7-Silicon steel is widely used in [ISRO-2K15]
Cutting Tools
Dies and Punches
Electrical Industry
Chemical Industry
8-Addition of vanadium to steel results in improvement of
(a) Heat-treatability by quenching
(b) Hardenability
(c) Fatigue strength
(d) Resistance to oxidation at elevated temperature
9-For improving the strength of steel at elevated temperatures, which one of the following alloying element is used?
(a) Copper
(b) Tungsten
(c) Aluminium
(d) Zinc
10-Which one of the following is the major alloying element in Invar?
(a) Aluminium
(b) Nickel
(c) Vanadium
(d) Copper
11- Coefficient of Expansion is practically nil in a particular alloy. What is this alloy?
(a) Hadfield Manganese Steel
(b) Invar
(c) Vitallium
(d) Stellite
12-Invar is used or measuring tapes primarily the to its
(a) Non-magnetic properties
(b) High nickel content
(c) Low coefficient of thermal expansion
(d) Hardenability
(a) 18% stainless, 8% chromium.
(b) 18% chromium, 8% nickel.
(c) 18% tungsten, 8% nickel.
(d) 18% tungsten, 8% chromium
.
2-The alloy steel designated as 40 Cr18 Ni 2 by Bureau of Indian Standards contains
(a) 0.4% C, 18% Cr and 2% Ni
(b) 4.0% C, 1.8% Cr and 0.2% Ni
(c) 0.4% C, 1.8% Cr and 2% Ni
(d) 0.4% C, 1.8% Cr and 0.2% Ni
3-Which one of the following elements is a ferritic stabilizer?
(a) Nickel
(b) Manganese
(c) Copper
(d) Chromium
4- Which one of the following elements is an austenitic stabilizer?
(a) Chromium
(b) Tungsten
(c) Nickel
(d) Molybdenum
5-Small percentage of boron is added to steel to
(a) Increases hardenability
(b) Reduce machinability
(c) Increases wear resistance
(d) Increase endurance strength
6-Some high speed steels have cobalt (Co) added to them in amounts ranging from 2% to 15%, since this element improves the
(a)Cutting efficiency, especially at high temperature
(b) Depth hardening ability of the HSS tool
(c) Red hardness of the HSS tool
(d) Grain structure of the HSS tool
7-Silicon steel is widely used in [ISRO-2K15]
Cutting Tools
Dies and Punches
Electrical Industry
Chemical Industry
8-Addition of vanadium to steel results in improvement of
(a) Heat-treatability by quenching
(b) Hardenability
(c) Fatigue strength
(d) Resistance to oxidation at elevated temperature
9-For improving the strength of steel at elevated temperatures, which one of the following alloying element is used?
(a) Copper
(b) Tungsten
(c) Aluminium
(d) Zinc
10-Which one of the following is the major alloying element in Invar?
(a) Aluminium
(b) Nickel
(c) Vanadium
(d) Copper
11- Coefficient of Expansion is practically nil in a particular alloy. What is this alloy?
(a) Hadfield Manganese Steel
(b) Invar
(c) Vitallium
(d) Stellite
12-Invar is used or measuring tapes primarily the to its
(a) Non-magnetic properties
(b) High nickel content
(c) Low coefficient of thermal expansion
(d) Hardenability
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