Diamagnetic materials

Question

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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Unit of viscosity in CGS system is

A.

B.

C.

D.

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__________ is not a case hardening process.

A. Carburising

B. Nitriding

C. Cyaniding

D. Annealing

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Principal alloying element in Elinvar (used for making hair springs for watches) is

A. Copper

B. Aluminium

C. Nickel

D. Zinc

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Load cells used for the measurement of weight has

A. Compact & rugged construction with an accuracy of 0.1 to 1%

B. No moving parts and incurs negligible deflection under load

C. Provision of thermal compensation and is hermetically sealed

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

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Direct conversion of thermal energy to electrical energy is facilitated by the

A. Fuel cells

B. Photo voltaic cell

C. Magneto hydrodynamic generator

D. None of these

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Corrosion rate cannot be lowered by reducing the __________ of the corroding medium.

A. Concentration

B. Velocity

C. Temperature

D. None of these

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At the point of boundary layer separation in fluid flow, the

A. Shear stress is maximum

B. Velocity gradient is flat

C. Density variation is maximum

D. Shear stress is zero

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Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by

A. Conduction

B. Convection

C. Radiation

D. Both 'a' & 'b'

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Which of the following can be manufactured using powder metallurgy techniques?

A. Brake linings

B. Bearings

C. Carbide tool tips

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

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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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Materials having __________ lattice structure are usually the most ductile.

A. Body centred cubic (bcc)

B. Hexagonal close packed (hcp)

C. Face centred cubic (fcc)

D. None of these

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Hot working of lead is carried out at

A. 75°C

B. 373°K

C. 150°C

D. Room temperature

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The friction factor for the turbulent fluid flow in a rough pipe does not depend upon the

A. Pipe roughness & pipe diameter

B. Fluid velocity

C. Type of flowing fluid

D. Both 'b' & 'c'

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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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at 1173E; at equilibrium, what will be the number of moles of CO gas required to reduce one mole of at 1173 K?

A. 1.0

B. 1.3

C. 2.3

D. 3.3

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Out of the following __________ iron has the best capability to bear sudden & excessive shocks.

A. White

B. Cast

C. Wrought

D. Pig

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Temper brittleness of a material can be fairly detected by the __________ test.

A. Fatigue

B. Notched bar impact

C. Tensile

D. Hardness

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Material of construction of the electrode used in the electric resistance welding is

A. Stainless steel

B. Graphite

C. Copper

D. Steel

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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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Removal of non-condensable from steam or other vapour is termed as the __________ process.

A. Condensation

B. Deaeration

C. Scavenging

D. Exhaust

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__________ has the highest melting point out of the following.

A. Tungsten

B. Zirconium

C. Molybdenum

D. Tantalum

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Addition of __________ to steel does not impart hardness.

A. Nickel

B. Copper

C. Chromium

D. Silicon

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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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Wood is a/an __________ material.

A. Amorphous

B. Cellular

C. Homogeneous

D. Granular

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Adhesives

A. Cant be used in the form of pressure sensitive tapes

B. Cant join two dissimilar metals

C. Cure instantaneously after application on a surface

D. None of these

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X-rays are

A. Positively charged

B. Negatively charged

C. Neutral

D. Of higher wavelength than visible light

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The excess air required for the combustion of pulverised coal is of the order of about __________ percent.

A. 5

B. 15

C. 30

D. 45

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Viscoelastic behaviour is observed in __________ materials.

A. Non-crystalline organic polymeric

B. Ceramic

C. All crystalline

D. All amorphous

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The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

A. 60 - 100

B. 400 - 700

C. 1200 -1500

D. 2000 - 2300

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With increase in temperature, the surface tension of water

A. Increases

B. Decreases

C. Remain constant

D. Increases linearly

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Accepted Answer

C. Are magnetised in direction opposite to the magnetic field

Diamagnetic materials

Correct Answer :

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Related Questions

Unit of viscosity in CGS system is

__________ is not a case hardening process.

Principal alloying element in Elinvar (used for making hair springs for watches) is

Load cells used for the measurement of weight has

Direct conversion of thermal energy to electrical energy is facilitated by the

Corrosion rate cannot be lowered by reducing the __________ of the corroding medium.

At the point of boundary layer separation in fluid flow, the

Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by

Which of the following can be manufactured using powder metallurgy techniques?

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

Materials having __________ lattice structure are usually the most ductile.

Hot working of lead is carried out at

The friction factor for the turbulent fluid flow in a rough pipe does not depend upon the

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.

at 1173E; at equilibrium, what will be the number of moles of CO gas required to reduce one mole of at 1173 K?

Out of the following __________ iron has the best capability to bear sudden & excessive shocks.

Temper brittleness of a material can be fairly detected by the __________ test.

Material of construction of the electrode used in the electric resistance welding is

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

Removal of non-condensable from steam or other vapour is termed as the __________ process.

__________ has the highest melting point out of the following.

Addition of __________ to steel does not impart hardness.

Presence of nickel & chromium in steel does not raise its

Wood is a/an __________ material.

Adhesives

X-rays are

The excess air required for the combustion of pulverised coal is of the order of about __________ percent.

Viscoelastic behaviour is observed in __________ materials.

The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

With increase in temperature, the surface tension of water

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