Substances which have permeability less than the permeability of free space are known as

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Substances which have permeability less than the permeability of free space are known as diamagnetic.

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Answer :

Diamagnetic
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Related questions

Substances which have permeability less than the permeability of free space are known as (a) ferromagnetic (b) paramagnetic (c) diamagnetic (d) bipolar

Description : Substances which have permeability less than the permeability of free space are known as (a) ferromagnetic (b) paramagnetic (c) diamagnetic (d) bipolar

Last Answer : (c) diamagnetic

The relative permeability is less than unity is case of

Last Answer : The relative permeability is less than unity is case of diamagnetic materials.

The initial permeability of an iron rod is

Last Answer : The initial permeability of an iron rod is the permeability almost in non-magnetised state.

Reciprocal of permeability is

Last Answer : Reciprocal of permeability is reluctivity.

Paramagnetic materials have relative permeability

Last Answer : slightly more than unity

The unit of relative permeability is

Last Answer : it is dimensionless.

Superconducting metal in super conducting state has relative permeability of

Last Answer : Superconducting metal in superconducting state has a relative permeability of zero.

Substances whose specific resistance abruptly decreases at very low temperature are called

Last Answer : Substances whose specific resistance abruptly decreases at very low temperature are called superconductors.

In free space, which parameter will be unity? a) Permittivity b) Absolute permittivity c) Relative permittivity d) Permeability

Description : In free space, which parameter will be unity? a) Permittivity b) Absolute permittivity c) Relative permittivity d) Permeability

Last Answer : c) Relative permittivity

The permeability and permittivity of air or free space is unity. State true/false. a) True b) False

Description : The permeability and permittivity of air or free space is unity. State true/false. a) True b) False

Last Answer : a) True

In free space, which of the following will be zero? a) Permittivity b) Permeability c) Conductivity d) Resistivity

Description : In free space, which of the following will be zero? a) Permittivity b) Permeability c) Conductivity d) Resistivity

Last Answer : c) Conductivity

Tesla metre per ampere (T. m/A) is the unit for the measurement of (A) Magnetic susceptibility (B) Magnetic moment (C) Permeability of free space (D) Flux density

Description : Tesla metre per ampere (T. m/A) is the unit for the measurement of (A) Magnetic susceptibility (B) Magnetic moment (C) Permeability of free space (D) Flux density

Last Answer : Option C

The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because (a) a proton gradient forms across the inner membrane(b) there is a change in the permeability of the inner mitochondrial membrane toward adenosine diphosphate (ADP) (c) high energy bonds are formed in mitochondrial proteins (d) ADP is pumped out of the matrix into the intermembrane space.

Description : The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triphosphate (ATP) is formed because (a) a proton gradient forms across the inner membrane (b) there is a ... mitochondrial proteins (d) ADP is pumped out of the matrix into the intermembrane space.

Last Answer : (a) a proton gradient forms across the inner membrane

Pick up the correct statement from the following: (A) The permeability of the coarse-grained soils may be reduced by grouting (B) The process of injecting fluids (i.e. grouts) into the pores space of the soil is called grouting (C) The grouting increases the soil strength (D) All the above

Description : Pick up the correct statement from the following: (A) The permeability of the coarse-grained soils may be reduced by grouting (B) The process of injecting fluids (i.e. grouts) into the pores space of the soil is called grouting (C) The grouting increases the soil strength (D) All the above

Last Answer : Answer: Option D

The average coefficient of permeability of natural deposits (A) Parallel to stratification is always greater than that perpendicular to stratification (B) Parallel to stratification is always less than that perpendicular to stratification (C) Is always same in both directions (D) Parallel to stratification may or may not be greater than that perpendicular to stratification

Description : The average coefficient of permeability of natural deposits (A) Parallel to stratification is always greater than that perpendicular to stratification (B) Parallel to stratification is always less ... D) Parallel to stratification may or may not be greater than that perpendicular to stratification

Last Answer : Answer: Option A

Pick out the wrong statement. (A) Weldability of high carbon steel is poorer compared to low carbon steel (B) Invar is a magnetic alloy (C) Magnetic permeability of the diamagnetic material is less than one (D) Martenistic transformation never goes to completion (i.e., 100%) at room temperature

Description : Pick out the wrong statement. (A) Weldability of high carbon steel is poorer compared to low carbon steel (B) Invar is a magnetic alloy (C) Magnetic permeability of the diamagnetic material is less than one (D) Martenistic transformation never goes to completion (i.e., 100%) at room temperature

Last Answer : Option B

Pick out the wrong statement. (A) A soft magnetic material should have high permeability and small area of hysteresis loop (B) Poisson's ratio of high melting point metals is more than unity (C) Solders generally melt at less than 185°C (D) Steel produced by B.O.F process is ideally suited for manufacturing flat product

Description : Pick out the wrong statement. (A) A soft magnetic material should have high permeability and small area of hysteresis loop (B) Poisson's ratio of high melting point metals is more than unity (C) ... less than 185°C (D) Steel produced by B.O.F process is ideally suited for manufacturing flat product

Last Answer : Option B

The relative permeability is less than unity is case of (a) ferromagnetic materials (b) ferrites (c) non-ferrous materials (d) diamagnetic materials

Description : The relative permeability is less than unity is case of (a) ferromagnetic materials (b) ferrites (c) non-ferrous materials (d) diamagnetic materials

Last Answer : (d) diamagnetic materials

Rotary drilling (A) Is not suitable for deposits containing very coarse gravel (B) Hinders the ground water observations and permeability test (C) Is not economical for holes of less than 10 cm (D) All the abov

Description : Rotary drilling (A) Is not suitable for deposits containing very coarse gravel (B) Hinders the ground water observations and permeability test (C) Is not economical for holes of less than 10 cm (D) All the above

Last Answer : Answer: Option D

Paramagnetic materials have relative permeability (a) slightly less than unity (b) equal to unity (c) slightly more than unity (d) equal to that ferromagnetic mate rials

Description : Paramagnetic materials have relative permeability (a) slightly less than unity (b) equal to unity (c) slightly more than unity (d) equal to that ferromagnetic mate rials

Last Answer : (c) slightly more than unity

A ferrite core has less eddy current loss than an iron core because ferrites have (A) High resistance. (B) Low resistance. (C) Low permeability. (D) High hysteresis.

Description : A ferrite core has less eddy current loss than an iron core because ferrites have (A) High resistance. (B) Low resistance. (C) Low permeability. (D) High hysteresis.

Last Answer : (A) High resistance.

The relative permeability of a paramagnetic substance is (A) unity. (B) slightly more than unity. (C) zero. (D) less than unity.

Description : The relative permeability of a paramagnetic substance is (A) unity. (B) slightly more than unity. (C) zero. (D) less than unity.

Last Answer : (B) slightly more than unity.

(1) a homogeneous mixture of two or more substances Explanation: A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase is called solution. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent. The solution more or less takes on the characteristics of the solvent including its phase, and the solvent is commonly the major fraction of the mixture.

Description : (1) a homogeneous mixture of two or more substances Explanation: A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase is called solution. In such a mixture, a ... the solvent including its phase, and the solvent is commonly the major fraction of the mixture.

Last Answer : Choose the incorrect statement pertaining to organic compounds - (1) They have low melting and boiling points (2) They do not dissolve in water (3) They are not easily combustible (4) They contain mainly carbon and hydrogen

The magnetism left in the iron after exciting field has been removed is known as

Last Answer : The magnetism left in the iron after exciting field has been removed is known as residual magnetism.

The ratio of intensity of magnetisation to the magnetisation force is known as

Last Answer : The ratio of intensity of magnetisation to the magnetisation force is known as susceptibility.

A material which is slightly repelled by a magnetic field is known as

Last Answer : A material which is slightly repelled by a magnetic field is known as diamagnetic material.

If the resistance of a conductor does not vary in accordance with Ohm's law it is known as

Last Answer : If the resistance of a conductor does not vary in accordance with Ohm's law it is known as non-linear conductor

The converse of hardness is known as?

Description : The converse of hardness is known as?

Last Answer : The converse of hardness is known as softness.

For a homogeneous earth dam 50 m high having 2 m free broad, a flow net was constructed and the results were : Number of potential drops = 2.4 Number of flow channels = 0.4. If co-efficiency of permeability of the dam material is 3 × 10-3 cm3 /sec, the discharge per metre length of dam, is (A) 12 × 10-5 m3 /sec (B) 24 × 10-3 m3 /sec (C) 6 × 10-5 m3 /sec (D) 24 × 10-5 m3 /sec

Description : For a homogeneous earth dam 50 m high having 2 m free broad, a flow net was constructed and the results were : Number of potential drops = 2.4 Number of flow channels = 0.4. If co-efficiency of permeability of the dam material is ... 24 10-3 m3 /sec (C) 6 10-5 m3 /sec (D) 24 10-5 m3 /sec

Last Answer : (D) 24 × 10-5 m3 /sec

Capacity of soil to absorb moisture, is generally known as (A) Permeability (B) Porosity (C) Infiltration capacity (D) Perviousness

Description : Capacity of soil to absorb moisture, is generally known as (A) Permeability (B) Porosity (C) Infiltration capacity (D) Perviousness

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The capability of a soil mass of full width and depth to transmit water, is known (A) Porosity (B) Permeability (C) Transmissibility (D) None of these

Description : The capability of a soil mass of full width and depth to transmit water, is known  (A) Porosity  (B) Permeability  (C) Transmissibility  (D) None of these 

Last Answer : (B) Permeability 

Property of earth to allow water to pass through it, is known as (A) Perviousness (B) Porosity (C) Permeability (D) Transmissibility

Description : Property of earth to allow water to pass through it, is known as  (A) Perviousness  (B) Porosity  (C) Permeability  (D) Transmissibility

Last Answer : (A) Perviousness 

The maximum water content at which a reduction in water content does not cause a decrease in volume of a soil mass, is known (A) Liquid limit (B) Plastic limit (C) Shrinkage limit (D) Permeability limit

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The minimum water content at which the soil retains its liquid state and also possesses a small shearing strength against flowing, is known (A) Liquid limit (B) Plastic limit (C) Shrinkage limit (D) Permeability limit

Description : The minimum water content at which the soil retains its liquid state and also possesses a small shearing strength against flowing, is known (A) Liquid limit (B) Plastic limit (C) Shrinkage limit (D) Permeability limit

Last Answer : (A) Liquid limit

The minimum water content at which the soil just begins to crumble when rolled into threads 3 mm in diameter, is known (A) Liquid limit (B) Plastic limit (C) Shrinkage limit (D) Permeability limit

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The property of a soil which allows it to be deformed rapidly without rupture, elastic rebound and also a volume change, is known (A) Porosity (B) Plasticity (C) Permeability (D) Ductility

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Last Answer : Answer: Option B

The ratio of intensity of magnetisation to the magnetisation force is known as (a) flux density (b) susceptibility (c) relative permeability (d) none of the above

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Last Answer : (b) susceptibility

The property of a soil due to which water percolates through it is known as a) Porosity b) Permeability* c) Moisture content d) Capillarit

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For all transparent material substances, the index of refraction A. A.is less than 1 B. B.is greater than 1 C. C.is equal to 1 D. Could be any of the given answers; it all depends on optical density

Description : For all transparent material substances, the index of refraction A. A.is less than 1 B. B.is greater than 1 C. C.is equal to 1 D. Could be any of the given answers; it all depends on optical density

Last Answer : B. B.is greater than 1

The photo-electric effect occurs only when the incident light has more than a certain critical

Last Answer : The photo-electric effect occurs only when the incident light has more than a certain critical frequency 

In an exothermic reaction, the energy of the reacting substances as compared to that of products is (A) More (B) Less (C) Same (D) Either (A) or (B), depends on order of reaction

Description : In an exothermic reaction, the energy of the reacting substances as compared to that of products is (A) More (B) Less (C) Same (D) Either (A) or (B), depends on order of reaction

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Critical compressibility factor for all substances (A) Are more or less constant (vary from 0.2 to 0.3) (B) Vary as square of the absolute temperature (C) Vary as square of the absolute pressure (D) None of these

Description : Critical compressibility factor for all substances (A) Are more or less constant (vary from 0.2 to 0.3) (B) Vary as square of the absolute temperature (C) Vary as square of the absolute pressure (D) None of these

Last Answer : (A) Are more or less constant (vary from 0.2 to 0.3)

Ferromagnets

Description : Ferromagnets

Last Answer : Ferromagnets Only certain materials, such as iron, cobalt, nickel, and gadolinium, exhibit strong magnetic effects. Such materials are called ferromagnetic, after the Latin word for iron, ... licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

The attraction capacity of electromagnet will increase if the

Last Answer : Atrraction  capacity  will  increase  if  supply  current  is  increased.

Temporary magnets are used in

Last Answer : Temporary magnets are used in loud-speakers,generators, motors.

Main causes of noisy solenoid are

Last Answer : Main causes of noisy solenoid are strong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force, uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts.

Core of an electromagnet should have

Last Answer : Core of an electromagnet should have low coercivity, high susceptibility.

Magnetism of a magnet can be destroyed by

Last Answer : Magnetism of a magnet can be destroyed by heating, hammering, by inductive action of another magnet.

The magnetic materials exhibit the property of magnetisation because of

Last Answer : The magnetic materials exhibit the property of magnetisation because of spin of nucleus.

The bar magnet has

Last Answer : The bar magnet has the dipole moment.