123) Which of the following temperature line indicates a Constant temperature in Iron-Cementite phase diagram for a given range of carbon?
Anonymous Quiz
8%
ACm line
32%
AC3 line
39%
AC1 line only
20%
Both AC1 & AC4 line
124) Related to Creep which one is correct? #GATE 2022
Anonymous Quiz
19%
It is time dependent continuos elongation at variable tensile load.
26%
Fine grain is suitable for good creep resistance of a material
34%
Secondary creep rate occurs at a constant creep rate
21%
Creep occurs mainly below 0.5×(melting point of a material)
125) Related to conventional iron making process in Blast Furnace which of the following is not TRUE? #GATE2022
Anonymous Quiz
15%
Reduction of iron oxides take place inside the Blast Furnace
23%
Metallurgical Coal is used as a fuel in blast furnace
40%
Decomposition of lime stone is an endothermic reaction and occurs at Belly region.
23%
Combustion of fuel takes place at the Tuyere.
126) Which of the following process is not a Secondary Steel making process?
Anonymous Quiz
17%
AOD process
26%
RH degassing
39%
VacuumDegassing (VD)
19%
LD process
127) For a single component in a condensed sytstem, two phase mixture, the number of independent variable properties are..........
Anonymous Quiz
17%
0
36%
1
33%
2
14%
3
128) Chemical potential is ......... I) an extesnive property II)an intensive property III) a force which deives the chemcial systems into equilibrium. #GATE2022
Anonymous Quiz
15%
I only
32%
II only
44%
I & III
9%
II &III
129) Which of the following method does not measure a mechanical property? #GATE2022
Anonymous Quiz
19%
Izod Test
27%
Rotaing Beam test
29%
Rebound Method
25%
Grossman Method
130) If Ɛ is true strain, σ is true stress and s is engineering stress. What is the relation between them? #GATE2022
Anonymous Quiz
29%
Ɛ= σ/s
23%
Ɛ= ln (σs)
44%
Ɛ= ln(σ/s)
5%
Ɛ= ln(s/σ)
131) At what temperature the entropy(S) of a homogeneous material which is in complete internal equilibrium will be zero?
Anonymous Quiz
22%
0 degree Celsius
41%
0 Kelvin
29%
25 degree Celsius
9%
298 Kelvin
132) What is Nil Ductility Temperature(NDT)?
Anonymous Quiz
20%
The temperature at which fracture surface is 100% fibrous
29%
The temperature at which fracture surface is 50% fibrous
37%
The temperature at which fracture surface is 25% fibrous
14%
The temperature at which fracture surface is 0% fibrous
133) The principle of Piezoelectricity is used in which of the following NDT method? #GATE 2022
Anonymous Quiz
15%
Radiography
36%
Eddy current testing
40%
Ultrasonic Testing
10%
Magnetic Particle testing
134) Chovrinov's rule is used in which of the manufacturing process?
Anonymous Quiz
16%
Metal Working
34%
Powder Metallurgy
35%
Welding
15%
Foundry
135) Which of the following statement regarding Martensite is not TRUE?
Anonymous Quiz
15%
It is diffusionless transformation process.
31%
Transformatuon occurs in the sound of speed.
38%
It has no particular orientation relationship with parent phase
16%
Martensite transformation increases the hardness in most of the steels
136) Which of the following equation gives a relationship between equilibrium pressure and temperature of a system? #GATE 2022
Anonymous Quiz
31%
Gibbs-Helmholtz equation
28%
Van't Hoff equation
26%
Clausius-Clapeyron equation
15%
Gibbs-Duhem equation
137) In oxygen steel making which of the following element show a hump in the impurity removing profile? #GATE 2022
Anonymous Quiz
17%
Silicon
33%
Phosphorous
30%
Carbon
20%
Manganese
138) The thermal reserve zone in Blast Furnace consists of......... #GATE2022
Anonymous Quiz
20%
Magnetite
39%
Hematite
29%
Wustite
12%
Unreduced Wustite and Iron
139) True Stress-Strain curve is in the always left to the Engineering Stress-Strain curve because.........
Anonymous Quiz
14%
True strain is less than engineering strain
33%
True stress is less then Engineering stress
35%
True Strain is equal to engineering stress
18%
True strain is greater than engineering strain
140) The ability of a material to withstand very large deformations in tesnion without necking is called.........
Anonymous Quiz
37%
Elasticity
32%
Plasticity
22%
Superelasticity
9%
Superplasticity
141) During heating above which of the following line gives the transformation of complete liquid phase?
Anonymous Quiz
13%
Solidus line
36%
Liquidus line
25%
Solvus line
26%
Both option a & b
142) Elastic modulus is the measurement of which of the following mechanical property?
Anonymous Quiz
17%
Toughness
34%
Resilience
35%
Stiffness
13%
Hardness