Tin based white metals are used, where bearings are subjected to

Question

Tin based white metals are used, where bearings are subjected to

A. High pressure & load

B. Low pressure & load

C. High temperature

D. Large surface wear

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__________ test can be termed as the semidestructive test.

A. Impact

B. Torsion

C. Hardness

D. Charpy

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One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m^{- 1}. k^-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

A. 100

B. 900

C. 9000

D. 10000

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Which of the following low melting alloy containing bismuth and lead is used for electric fuse?

A. Wood's metal

B. Babbitt metal

C. Monel metal

D. Duralumin

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Neutrons are present in all atoms except that of

A. He

B. C

C. H

D. Ar

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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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Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas)

A. √T

B. 1/√P

C. √y

D. 1/√ρ

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Factor of safety is the ratio of the __________ stress to the working stress.

A. Tensile

B. Compressive

C. Yield

D. Bearing

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Hydro-cyclone is a

A. Crusher

B. wet classifier

C. Dry classifier

D. Magnetic separator

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Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are __________ respectively.

A. 70 & 30

B. 30 & 70

C. 50 & 50

D. 90 & 10

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Absolute zero pressure can be attained at a temperature of

A. 0°C

B. 50°K

C. 0°R

D. None of these

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The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process?

A. Cyaniding

B. Sherardizing

C. Spheroidising

D. None of these

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The normal stress is the same in all directions at a point in a fluid, only when the fluid

A. Is at rest & has zero viscosity

B. Is frictionless

C. Fluid layer has no motion relative to an adjacent layer of fluid

D. is incompressible & frictionless

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Steels with high carbon equivalent have poor Weldability, because in these steels during welding

A. Carbon and other alloying elements get oxidised from the weld pool

B. Excessive ferrite forms in the heat affected zone leading to poor toughness of the weld

C. Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld

D. Segregation of carbon and other element occurs in the weld pool leading to poor properties of the weld

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Out of the following, which will fracture most readity, when hit with a hard hammer?

A. Brass

B. Bronze

C. German silver

D. Cast iron

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__________ is a special constituent of chlorophyll without which photosynthesis is not possible.

A. Calcium

B. Nitrogen

C. Phosphorous

D. Hydrogen

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Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal

A. Tensile strength

B. Compressive strength

C. Young's modulus

D. Thermal co-efficient of expansion

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Silicon in steel

A. Makes it usable in almost all magnetic circuits where alternating current is used

B. Increases its electrical resistivity and decreases the hysteresis loss

C. Is present upto 5% & 4% respectively when used in transformers & motor armatures

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

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Normalising of an object does not

A. Refine coarse grain structure obtained during hot working

B. Improve ductility

C. Improve yield strength

D. Improve mechanical properties

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The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10^-16 m²S^-1 and it is 1.94 × 10^-14 m²S^{- 1} at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is

A. 130

B. 180

C. 230

D. 250

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__________ the exhaust gas is an indication of the incomplete combustion of fuel.

A. Low temperature of

B. High temperature of

C. High % of CO in

D. High % of CO₂ in

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Young's modulus of a material is the measure of its

A. Stiffness

B. Malleability

C. Creep resistance

D. Tensile strength

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The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.

A. Red

B. Extended

C. Super

D. Extreme

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Which of the following is not a charge material for cupola?

A. Limestone

B. Iron scrap

C. Iron ore

D. Pig iron

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__________ of austenite decreases the hardenability in steel.

A. Fine grains

B. Coarse grains

C. Homogeneity

D. Dissolved elements (except cobalt)

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Addition of __________ to steel does not impart hardness.

A. Nickel

B. Copper

C. Chromium

D. Silicon

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In an eutectic system, two elements are completely

A. Soluble in solid state

B. Insoluble in liquid state

C. Insoluble in both solid & liquid state

D. Soluble in liquid state

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__________ of hard alloy and tool steel is done to make it easily machinable.

A. Case carburising

B. Tempering

C. Normalising

D. Annealing

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Specific __________ is a dimensionless quantity.

A. Heat

B. Humidity

C. Weight

D. None of these

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An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section.

A. Adiabatic

B. Isothermal

C. Isentropic

D. Isochoric

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Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.

A. 723

B. 959

C. 1147

D. 1493

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Accepted Answer

A. High pressure & load

Tin based white metals are used, where bearings are subjected to

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

__________ test can be termed as the semidestructive test.

One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m^{- 1}. k^-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

Which of the following low melting alloy containing bismuth and lead is used for electric fuse?

Neutrons are present in all atoms except that of

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

Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas)

Factor of safety is the ratio of the __________ stress to the working stress.

Hydro-cyclone is a

Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are __________ respectively.

Absolute zero pressure can be attained at a temperature of

The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process?

The normal stress is the same in all directions at a point in a fluid, only when the fluid

Steels with high carbon equivalent have poor Weldability, because in these steels during welding

Out of the following, which will fracture most readity, when hit with a hard hammer?

__________ is a special constituent of chlorophyll without which photosynthesis is not possible.

Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal

Silicon in steel

Normalising of an object does not

The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10^-16 m²S^-1 and it is 1.94 × 10^-14 m²S^{- 1} at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is

__________ the exhaust gas is an indication of the incomplete combustion of fuel.

Young's modulus of a material is the measure of its

The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.

Which of the following is not a charge material for cupola?

__________ of austenite decreases the hardenability in steel.

Addition of __________ to steel does not impart hardness.

In an eutectic system, two elements are completely

__________ of hard alloy and tool steel is done to make it easily machinable.

Specific __________ is a dimensionless quantity.

An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section.

Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.

Also checkout

Tin based white metals are used, where bearings are subjected to

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

__________ test can be termed as the semidestructive test.

One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m- 1. k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

Which of the following low melting alloy containing bismuth and lead is used for electric fuse?

Neutrons are present in all atoms except that of

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

Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas)

Factor of safety is the ratio of the __________ stress to the working stress.

Hydro-cyclone is a

Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are __________ respectively.

Absolute zero pressure can be attained at a temperature of

The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process?

The normal stress is the same in all directions at a point in a fluid, only when the fluid

Steels with high carbon equivalent have poor Weldability, because in these steels during welding

Out of the following, which will fracture most readity, when hit with a hard hammer?

__________ is a special constituent of chlorophyll without which photosynthesis is not possible.

Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal

Silicon in steel

Normalising of an object does not

The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10-16 m2S-1 and it is 1.94 × 10-14 m2S- 1 at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is

__________ the exhaust gas is an indication of the incomplete combustion of fuel.

Young's modulus of a material is the measure of its

The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.

Which of the following is not a charge material for cupola?

__________ of austenite decreases the hardenability in steel.

Addition of __________ to steel does not impart hardness.

In an eutectic system, two elements are completely

__________ of hard alloy and tool steel is done to make it easily machinable.

Specific __________ is a dimensionless quantity.

An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section.

Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.

Also checkout

One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m^{- 1}. k^-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is

The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 × 10^-16 m²S^-1 and it is 1.94 × 10^-14 m²S^{- 1} at 1200 K. The activation energy (in k. J.mole-1) for the diffusion of Ni in Cu is