Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.

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Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.

A. Slip

B. Fracture

C. Winning

D. Dislocation

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Which of the following does not have a sharp melting point?

A. Thoria

B. Glass

C. Ice

D. Pig iron

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A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to

A. √(Particle diameter)

B. Particle diameter

C. (Particle diameter)²

D. (Particle diameter)³

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An oxidation process is accompanied with decrease in the

A. Number of electrons

B. Oxidation number

C. Number of ions

D. All (A), (B) & (C)

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Baffles provided on the shell side of a shell and tube heat exchanger are meant for

A. Providing support for the tubes

B. Improving heat transfer

C. Both 'a' & 'b'

D. Preventing the fouling of tubes & stagnation of shell side fluid

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The rolling process cannot be used to produce

A. Plates

B. Rods

C. Tubes

D. Wires

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Dryness fraction of dry steam is

A. 0

B. ∞

C. 1

D. 0.5

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The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.

A. 140

B. 180

C. 240

D. 280

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The most detrimental impurity in high pressure boiler feed water is

A. Suspended salt

B. Dissolved salt

C. Silica

D. Turbidity

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Shaft/rotor speed is most accurately measured by a

A. Frequency counter

B. Tachometer

C. Strobometer

D. Speedometer

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Normalising does not __________ of a metal.

A. Improve machinability & tensile strength

B. Remove internal stresses

C. Refine the structure

D. Remove strains caused by cold working

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__________ cannot increase the fatigue strength of a material.

A. Grain refining

B. Grain coarsening

C. Surface hardening

D. Shot peening

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Earing is a defect found in steels after the following metal working operation.

A. Extrusion

B. Rolling

C. Deep drawing

D. Wire drawing

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Which of the following is prone to cup and cone fracture?

A. Cast iron

B. Soft brass

C. Round specimen of ductile metal

D. Flat tensile specimen of ductile metal

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High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ percent.

A. 5 to 10

B. 15 to 25

C. 45 to 50

D. 75 to 80

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In TIG welding, thoriated tungsten electrodes are used, because it

A. Has higher current carrying capacity

B. Has better electron emissivity

C. Is stronger than ordinary tungsten

D. Is easy to prepare

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In electrical resistance welding, distortion results from the use of improper

A. Clamping methods

B. Electrodes

C. Current

D. Filler material

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The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.

A. Refrigerant cooling

B. Evaporator

C. Condenser

D. Throttling

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The minimum and the maximum number of members required to form a Private Limited Joint Stock Company are respectively

A. 7 and 30

B. 10 and 50

C. 2 and 50

D. 13 and 55

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The Al₂O₃ content of cryolite in Hall- Heroult cell is maintained between __________ percent.

A. 2-5

B. 18-20

C. 12-15

D. 6-12

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Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

A. Grashoff number

B. Grashoff number & Reynolds number

C. Reynolds number

D. Grashoff number & Prandtl number

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Friction factor for fluid flow in pipe does not depend upon the

A. Pipe length

B. Pipe roughness

C. Fluid density & viscosity

D. Mass flow rate of fluid

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Corrosion of metals cannot be prevented by its

A. Tempering

B. Chromising

C. Aluminising

D. Alloying

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Good design of the casing of a centrifugal pump aims at minimising the

A. Cavitation

B. Frictional losses

C. Kinetic energy loss

D. Static head

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Probability of cavitation occuring becomes very high, when the local __________ resulting in water bubbles formation, which on rupture cause cavitation

A. Pressure falls below the vapour pressure

B. Pressure becomes very high

C. Temperature becomes low

D. All 'a', 'b' & 'c'

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Galvanic corrosion cannot be prevented by

A. Cathodic protection

B. Anodic protection

C. Usage of largest possible anodic area

D. Any one of these

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Working of linear variable differential transducer (LVDT) is based on the principle of variable

A. Capacitance

B. Resistance

C. Mutual inductance

D. None of these

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The highest stress that a material can withstand for a specified length of time without excessive deformation is called the __________ strength.

A. Creep

B. Endurance

C. Fatigue

D. None of these

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Presence of nickel & chromium in steel does not raise its

A. Elastic limit

B. Machining properties

C. Ductility

D. Resilience

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Difference at any instant between the value of the controlled variable and the set point is called the

A. Deviation

B. Derivative time

C. Error ratio

D. Differential gap

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All of the following alloying elements of steel increases hardness but sacrifice ductility, except

A. Nickel

B. Vanadium

C. Molybdenum

D. Chromium

Discuss this answer

Accepted Answer

D. Dislocation

Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Which of the following does not have a sharp melting point?

A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to

An oxidation process is accompanied with decrease in the

Baffles provided on the shell side of a shell and tube heat exchanger are meant for

The rolling process cannot be used to produce

Dryness fraction of dry steam is

The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.

The most detrimental impurity in high pressure boiler feed water is

Shaft/rotor speed is most accurately measured by a

Normalising does not __________ of a metal.

__________ cannot increase the fatigue strength of a material.

Earing is a defect found in steels after the following metal working operation.

Which of the following is prone to cup and cone fracture?

High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ percent.

In TIG welding, thoriated tungsten electrodes are used, because it

In electrical resistance welding, distortion results from the use of improper

The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.

The minimum and the maximum number of members required to form a Private Limited Joint Stock Company are respectively

The Al₂O₃ content of cryolite in Hall- Heroult cell is maintained between __________ percent.

Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

Friction factor for fluid flow in pipe does not depend upon the

Corrosion of metals cannot be prevented by its

Good design of the casing of a centrifugal pump aims at minimising the

Probability of cavitation occuring becomes very high, when the local __________ resulting in water bubbles formation, which on rupture cause cavitation

Galvanic corrosion cannot be prevented by

Working of linear variable differential transducer (LVDT) is based on the principle of variable

The highest stress that a material can withstand for a specified length of time without excessive deformation is called the __________ strength.

Presence of nickel & chromium in steel does not raise its

Difference at any instant between the value of the controlled variable and the set point is called the

All of the following alloying elements of steel increases hardness but sacrifice ductility, except

Also checkout

Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Which of the following does not have a sharp melting point?

A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to

An oxidation process is accompanied with decrease in the

Baffles provided on the shell side of a shell and tube heat exchanger are meant for

The rolling process cannot be used to produce

Dryness fraction of dry steam is

The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.

The most detrimental impurity in high pressure boiler feed water is

Shaft/rotor speed is most accurately measured by a

Normalising does not __________ of a metal.

__________ cannot increase the fatigue strength of a material.

Earing is a defect found in steels after the following metal working operation.

Which of the following is prone to cup and cone fracture?

High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ percent.

In TIG welding, thoriated tungsten electrodes are used, because it

In electrical resistance welding, distortion results from the use of improper

The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.

The minimum and the maximum number of members required to form a Private Limited Joint Stock Company are respectively

The Al2O3 content of cryolite in Hall- Heroult cell is maintained between __________ percent.

Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

Friction factor for fluid flow in pipe does not depend upon the

Corrosion of metals cannot be prevented by its

Good design of the casing of a centrifugal pump aims at minimising the

Probability of cavitation occuring becomes very high, when the local __________ resulting in water bubbles formation, which on rupture cause cavitation

Galvanic corrosion cannot be prevented by

Working of linear variable differential transducer (LVDT) is based on the principle of variable

The highest stress that a material can withstand for a specified length of time without excessive deformation is called the __________ strength.

Presence of nickel & chromium in steel does not raise its

Difference at any instant between the value of the controlled variable and the set point is called the

All of the following alloying elements of steel increases hardness but sacrifice ductility, except

Also checkout

The Al₂O₃ content of cryolite in Hall- Heroult cell is maintained between __________ percent.