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Which of the following is not used as a bearing material?

A. Copper-lead alloys

B. Babbitts

C. Bronzes

D. Cermets

Correct Answer :

D. Cermets


Related Questions

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4

Which of the following has the highest value of refractive index?

A. Brine (sea water)

B. Diamond

C. Distilled water

D. Glass

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4

Runge-Kutta method is used to solve a/an

A. Ordinary differential equation of nth order

B. Simultaneous non-linear equation

C. Linear differential equation

D. None of these

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4

Wood is a/an __________ material.

A. Amorphous

B. Cellular

C. Homogeneous

D. Granular

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4

In chemical dehumidification process

A. Wet bulb temperature increases

B. Dry bulb temperature remains constant

C. Dew point temperature increases

D. Dry bulb temperature increases

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4

Mild steel has __________ crystal lattice structure.

A. Face centred cubic (fcc)

B. Body centred cubic (bcc)

C. Orthorhombic

D. Cubic

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4

__________ can replace tungsten in high speed steel.

A. Chromium

B. Vanadium

C. Cobalt

D. Molybdenum

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4

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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4

__________ cannot increase the fatigue strength of a material.

A. Grain refining

B. Grain coarsening

C. Surface hardening

D. Shot peening

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4

Atomic __________ of an element is a whole number.

A. Weight

B. Number

C. Volume

D. Radius

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4

The noble metals

A. Are exemplified by Na, K and Li

B. Do not resist corrosion very strongly

C. Are the lowermost in the electro-chemical series of metals

D. None of these

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4

The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the

A. Final control element

B. On-off control

C. Floating control action

D. None of these

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4

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

A. 5

B. 10

C. 20

D. 40

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4

What happens, when SO2 is passed through a solution of H2S in water?

A. Precipitation of sulphur takes place

B. H2SO3 is formed

C. Oleum is formed

D. None of these

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4

The product of a commercial direct reduction process is

A. Liquid iron

B. Solid iron

C. Sponge iron

D. Iron saturated with carbon

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4

Thermal conductivity of a material does not depend upon its

A. Mass

B. Volume

C. Surface area

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

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4

Gantt charts are used for streamlining the

A. Inventory control

B. Production schedule

C. Sales forecasting

D. Quality control

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4

Identify the false statement

A. Martensitic steels are less susceptible to pitting corrosion than austenitic steels

B. Pitting corrosion is usually very localised

C. Hydrogen embrittlement is facilitated by tensile stress

D. Stress corrosion cracking is facilitated by tensile stress

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4

Age hardening is connected with

A. Babbitt metal

B. Gun metal

C. Stainless steel

D. Duralumin

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4

Minimum number of members required to form a Public Limited Joint Stock Com-pany is

A. 7

B. 10

C. 12

D. 17

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4

Wrought iron does not have

A. Uniform strength in all directions

B. Ability to hold protective coating

C. High ductility & corrosion resistance

D. Easily weldable characteristics

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4

A polymer is termed as an 'elastomer', if its percentage elongation is more than 100%. An elastomer is termed as 'rubber' if its percentage elongation is more than __________ percent.

A. 150

B. 200

C. 300

D. 400

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4

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

A. Calcium

B. Nitrogen

C. Phosphorous

D. Hydrogen

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4

X-rays are

A. Positively charged

B. Negatively charged

C. Neutral

D. Of higher wavelength than visible light

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4

Alloy powder manufactured by the following process have spherical shapes.

A. Electrochemical deposition

B. Gaseous reduction

C. Atomisation

D. Mechanical attrition

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4

Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.

A. 10

B. 20

C. 30

D. 40

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4

__________ iron is produced by the annealing of white cast iron.

A. Malleable

B. Nodular

C. Ductile

D. Grey

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4

__________ temperature remains constant during adiabatic saturation process of unsaturated air.

A. Dew point

B. Dry bulb

C. Wet bulb

D. None of these

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4

In the Bayer's process, bauxite is digested under pressure using

A. H2SO4

B. NaOH

C. NH3

D. HCl

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4

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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4

Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?

A. Anodising

B. Tempering

C. Carburising

D. Annealing