GATE EXAM PDF
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GATE EXAM PDF
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27) Charpy test is used to measure which mechanical property of a material?
Anonymous Quiz
28%
Hardness
31%
Strength
26%
Toughness
15%
Creep
28) The most common Iron ore to produce iron in industry is...........
Anonymous Quiz
38%
Magnetite
40%
Hematite
20%
Limonite
2%
Siderite
29) According to thermodynamics,anything in which any process occurs is called a.................
Anonymous Quiz
11%
Device
27%
Furnace
53%
System
10%
Surrounding
30) How many fundamentals law of thermodynamics are there in Metallurgical Thermodynamics?
Anonymous Quiz
15%
2
52%
3
30%
4
3%
5
31) For spring which mechanical property must be required?
Anonymous Quiz
12%
High hardness
28%
High toughness
44%
High resilience
17%
High strength
32) Which of the following crystal structure has lowest Atomic Packing Factor (APF)?
Anonymous Quiz
18%
Body Centred Cubic (BCC)
28%
Hexagonal Closed Pack (HCP)
49%
Simple Cubic (sc)
6%
Diamond Cubic (DC)
34) The maximum number of phases that can be coexist in equilibrium in Iron-Cementite phase diagram is............
Anonymous Quiz
10%
1
36%
2
41%
3
13%
4
35) Fine grain size can not improve which of the following mechanical property of a material?
Anonymous Quiz
15%
Strength
35%
Fatigue
30%
Toughness
20%
Creep
36) Gibbs Free Energy (G) of a closed sytem is calculated by which of the following equation?
Anonymous Quiz
27%
H+TS
28%
E+TS
37%
H-TS
8%
E-TS
37) Which country in the world has highest usuable iron ore prodcution?
Anonymous Quiz
37%
India
28%
China
22%
Australia
13%
Brazil
38) Martensite formation can be explained by which of the following diagram?
Anonymous Quiz
32%
Iron-Cementite phase diagram
33%
CCT diagram
26%
Ellingham diagram
9%
Schaeffler Diagram
39) Which of the material is diamagnetic at room temeprature?
Anonymous Quiz
11%
Mild steel
44%
Ferritic stainless steel.
29%
Fe-Ni alloy
16%
Austenitic stainless steel
40) What are the crystal strcutures that iron can exhibit at different circumstances?
Anonymous Quiz
22%
BCC only
28%
FCC only
34%
BCC & FCC
16%
BCC, FCC & HCP
42) In DI pipe, DI means Ductile Iron that is one type of................
Anonymous Quiz
20%
Pure iron
42%
Wrought iron
17%
Steel
21%
Cast Iron
43) Which material is used for making files (tools)?
Anonymous Quiz
30%
Mild steel
20%
Spring steel
18%
Transformer steel
32%
High Carbon steel
44) In Ferrite, carbon atom sits in............of the unit cell
Anonymous Quiz
15%
Tetrahedral voids
39%
Octahedral voids
36%
In the place of Iron (lattice points)
9%
In the body centred position
45) Blast furnace for iron making is a............type of chemical reactor.
Anonymous Quiz
24%
Counter current reactor
44%
Co-current reactor
22%
Horizontal reactor
10%
Inclined reactor
46) In thermodynamics the property which is not dependent on the mass or number of moles in a system are called.................of the system
Anonymous Quiz
33%
Extensive property
40%
Intensive property
20%
Mechanical property
7%
None of the above
47) Gibbsite is a mineral of which of the following metal?
Anonymous Quiz
20%
Nickel
30%
Copper
31%
Aluminium
19%
Titanium