What is the range of tempering temperature (°C) for most of the materials?

Question

What is the range of tempering temperature (°C) for most of the materials?

A. 75-100

B. 200-300

C. 350-450

D. 500-600

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In extrusion of metals, which of the following statement is true?

A. Speed of the extruded material is same as that of ram speed

B. Redundant work is a function of the die angle

C. Relative motion between the billet surface and the container wall is always present

D. Hollow ram is used for indirect extrusion

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__________ is used as a material of construction for the blade of power saw.

A. Wrought iron

B. Stainless steel

C. Mild steel

D. High speed steel

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Maximum permissible air velocity in pipelines is about __________ metre/second.

A. 5

B. 10

C. 20

D. 40

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Gas turbine normally employs a constant __________ cycle.

A. Pressure

B. Temperature

C. Volume

D. None of these

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Holes for riveting purposes should be preferably made by

A. Cutting torch

B. Drilling

C. Punching

D. None of these

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Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)

A. H

B. H/2

C. H/4

D. H/6

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Which of the following metals reacts violently with water?

A. Mercury

B. Sodium

C. Calcium

D. Magnesium

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Function of gear box is to

A. Reduce the speed

B. Obtain variable speed

C. Increase the speed

D. Produce high torque

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More than 95% of __________ is present in corundum.

A. SiO₂

B. Al₂O₃

C. CaSiO₂

D. MgO

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Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines?

A. Air filter

B. Fuel injector

C. Exhaust silencer

D. Battery

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Air standard Otto cycle is more efficient than the diesel cycle for the same

A. Heat addition & compression ratio

B. Heat addition & pressure

C. Compression ratio & pressure

D. Cylinder dimension & rpm

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Limestone addition in the blast furnace is done to flux __________ present in the raw materials.

A. SiO2

B. Al2O3

C. MnO2

D. P

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In case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is

A. 1

B. 1.4

C. 1.5

D. Y = C_p/C_v

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Damage to metal surface by mechanical action is called

A. Pitting

B. Corrosion

C. Erosion

D. None of these

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__________ is the trade name assigned to a nonferrous cast alloy composed of cobalt, chromium & tungsten.

A. Stellite

B. High speed steel

C. Cermet

D. Alnico

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Spark plug is provided in a/an

A. Engine having carburettor

B. Diesel engine

C. Compression ignition engine

D. Both (B) & (C)

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__________ furnace is generally used in the non-ferrous foundries.

A. Direct arc

B. Indirect arc

C. Resistance

D. Induction

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Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________ gms of zinc per of steel strip.

A. 5-10

B. 1000-1500

C. 120-500

D. 1500-3000

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Diamagnetic materials

A. Are magnetised by eddy currents only

B. Are non-magnetic and cannot be magnetised

C. Are magnetised in direction opposite to the magnetic field

D. Can be magnetised in one direction only

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Secondary hardening in steels arises out of the

A. Precipitation of fine alloy carbides at high temperatures

B. Refinement of ferrite grain size by working

C. Decomposition of retained austenite upon heat treatment

D. Precipitation of complex inter-metallic upon heat treatment

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A dummy activity is used in PERT network to describe the

A. Precedence relationship

B. Resource idleness

C. Resource restriction

D. Necessary time delay

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Which of the following are considered applications of ultrasonic testing?

A. Determination of elastic constant

B. Detection of defects in metal

C. Measurement of material thickness

D. None of the above

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Compressed dry air is used as the cutting fluid, while machining

A. Steel

B. Cast iron

C. Aluminium

D. None of these

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Increasing the carbon content of steel

A. Reduces the upper shelf energy

B. Increasing the ductility transition temperature

C. Decreases brittleness

D. Decreases hardness

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Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)

A. 1/k

B. k

C. k²

D. 1/k²

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Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that

A. Pure oxygen has been used for combustion

B. Nitrogen percentage in the fuel is very high

C. Excess air has been used for combustion

D. Hydrogen is not present in the fuel

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Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?

A. Small punches, broaches reamers and springs

B. Cutlery, screws, rivets and files

C. Mandrels, twist drills, small lathe tools and razors

D. Forgings like can shaft, structural steel plate, threading dies and drawing dies

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Pick out the wrong statement about the machinability of metals. Machinability of a metal

A. Decreases with increase in strain hardening tendencies

B. Decreases with increase in hardness, in general

C. Depend on the composition, microstructure and physical & mechanical properties

D. Decreases with increases in tensile strength & decrease in grain size

Discuss this answer

Nusselt number/Biot number varies

A. Inversely with thermal conductivity

B. Directly with heat transfer co-efficient

C. Directly with thermal conductivity

D. Inversely with the dimension of the solid

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In __________ process, there is an increase in entropy with no degradation of energy.

A. Isothermal expansion

B. Isochoric heat addition

C. Polytropic expansion

D. Isobaric heat addition

Discuss this answer

Accepted Answer

B. 200-300

What is the range of tempering temperature (°C) for most of the materials?

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

In extrusion of metals, which of the following statement is true?

__________ is used as a material of construction for the blade of power saw.

Maximum permissible air velocity in pipelines is about __________ metre/second.

Gas turbine normally employs a constant __________ cycle.

Holes for riveting purposes should be preferably made by

Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)

Which of the following metals reacts violently with water?

Function of gear box is to

More than 95% of __________ is present in corundum.

Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines?

Air standard Otto cycle is more efficient than the diesel cycle for the same

Limestone addition in the blast furnace is done to flux __________ present in the raw materials.

In case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is

Damage to metal surface by mechanical action is called

__________ is the trade name assigned to a nonferrous cast alloy composed of cobalt, chromium & tungsten.

Spark plug is provided in a/an

__________ furnace is generally used in the non-ferrous foundries.

Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________ gms of zinc per of steel strip.

Diamagnetic materials

Secondary hardening in steels arises out of the

A dummy activity is used in PERT network to describe the

Which of the following are considered applications of ultrasonic testing?

Compressed dry air is used as the cutting fluid, while machining

Increasing the carbon content of steel

Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)

Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that

Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?

Pick out the wrong statement about the machinability of metals. Machinability of a metal

Nusselt number/Biot number varies

In __________ process, there is an increase in entropy with no degradation of energy.

Also checkout

What is the range of tempering temperature (°C) for most of the materials?

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

In extrusion of metals, which of the following statement is true?

__________ is used as a material of construction for the blade of power saw.

Maximum permissible air velocity in pipelines is about __________ metre/second.

Gas turbine normally employs a constant __________ cycle.

Holes for riveting purposes should be preferably made by

Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)

Which of the following metals reacts violently with water?

Function of gear box is to

More than 95% of __________ is present in corundum.

Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines?

Air standard Otto cycle is more efficient than the diesel cycle for the same

Limestone addition in the blast furnace is done to flux __________ present in the raw materials.

In case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is

Damage to metal surface by mechanical action is called

__________ is the trade name assigned to a nonferrous cast alloy composed of cobalt, chromium & tungsten.

Spark plug is provided in a/an

__________ furnace is generally used in the non-ferrous foundries.

Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________ gms of zinc per of steel strip.

Diamagnetic materials

Secondary hardening in steels arises out of the

A dummy activity is used in PERT network to describe the

Which of the following are considered applications of ultrasonic testing?

Compressed dry air is used as the cutting fluid, while machining

Increasing the carbon content of steel

Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)

Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that

Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?

Pick out the wrong statement about the machinability of metals. Machinability of a metal

Nusselt number/Biot number varies

In __________ process, there is an increase in entropy with no degradation of energy.

Also checkout

Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that