Transformer cores are normally made from

Question

Transformer cores are normally made from

A. Soft ferrites

B. High purity iron

C. Grain oriented Fe-Si alloy

D. Al-Ni-Co alloy

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Normalising of a casting does not

A. Induce stresses in it

B. Refine its grain structure

C. Reduce segregation

D. Improve its mechanical properties

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Limestone is added in the blast furnace (during pig iron manufacture) to

A. Form slag by combining with impurities

B. Supply heat by undergoing exothermic reaction with impurities

C. Reduce the coke consumption

D. Reduce slag viscosity

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The majority charge carriers in p-type silicon are

A. Free electrons

B. Ions

C. Conduction electrons

D. Holes

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Which of the following is an example of stress corrosion?

A. Season cracking of brass

B. Caustic embrittlement of steel

C. Both (A) & (B)

D. Neither (A) nor (B)

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In case of a, centrifugal pump, the ratio h₁/h₂ is termed as the __________ efficiency (where, h₁ = actual measured head & h₂ = head imparted to the fluid by impeller).

A. Mechanical

B. Overall

C. Volumetric

D. Impeller

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Which of the following phenomenon will exhibit the minimum heat transfer?

A. Boiling

B. Forced convection in air

C. Free convection in air

D. Conduction in air

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Quartz is a __________ material.

A. Diamagnetic

B. Ferromagnetic

C. Ferroelectric

D. Piezoelectric

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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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The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.

A. 0.5

B. 3

C. 10

D. 25

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During sensible cooling of air, its wet bulb temperature

A. Decreases but dew point remains constant

B. Increases but dew point remains constant

C. Increases & the dew point decreases

D. Decreases & the dew point increases

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Induced draft fans provided in large thermal power plant boilers have __________ blades.

A. Forward curved

B. Backward curved

C. Double curved

D. Radial or straight

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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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Metal cutting by oxy-acetylene flame is accomplished by the __________ of the metal.

A. Burning

B. Intensive oxidation

C. Evaporation

D. None of these

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If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.

A. Critical

B. Breeder

C. Fertile

D. Heterogeneous

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Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.

A. Cementite

B. Austenite

C. Martensite

D. Pearlite

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Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

A. 1.5

B. 3

C. 5

D. 7

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A pycnometer is used for the measurement of

A. Flow rate of molten metal

B. Specific gravity of a liquid

C. Composition of alloys

D. Concentration of a solution

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__________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently.

A. Collar

B. Flanged

C. Bell and Spigot

D. Expansion

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Oxyacetylene reducing flame is used while carrying out welding on

A. Alloy steel

B. Grey cast iron

C. Mild steel

D. High carbon steel

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Dislocations are __________ defects.

A. Point

B. Line

C. Volume

D. None of these

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Softening of hardened steel is done by its

A. Normalising

B. Tempering

C. Annealing

D. Carburising

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The activity of pure hydrogen gas at 1000°C and 5 atm pressure

A. Is always less than 1

B. Is always greater than 1

C. Can be 5

D. Depends on the choice of the standard state

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Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.

A. Wrought

B. Tool

C. Alloy

D. Plain carbon

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Notched bar test is used for testing the __________ of a material.

A. Impact strength

B. Endurance limit

C. Machinability

D. Corrosion resistance

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Cemented carbide tools are not suitable for cutting

A. Aluminium

B. Brass

C. Cast iron

D. Steel

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Fibre glass is a composite material of

A. Glass fibre in a polymer matrix

B. Glass fibre in a metallic matrix

C. Polymer fibre in a glassy matrix

D. Both 'b' & 'c'

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Wood is a/an __________ material.

A. Amorphous

B. Cellular

C. Homogeneous

D. Granular

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Which one of the following is incombustible?

A. H2

B. CCl4

C. C2H2

D. S

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Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV.

A. 20

B. 200

C. 500

D. 2000

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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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Accepted Answer

C. Grain oriented Fe-Si alloy

Transformer cores are normally made from

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Normalising of a casting does not

Limestone is added in the blast furnace (during pig iron manufacture) to

The majority charge carriers in p-type silicon are

Which of the following is an example of stress corrosion?

In case of a, centrifugal pump, the ratio h₁/h₂ is termed as the __________ efficiency (where, h₁ = actual measured head & h₂ = head imparted to the fluid by impeller).

Which of the following phenomenon will exhibit the minimum heat transfer?

Quartz is a __________ material.

Silicon in steel

The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.

During sensible cooling of air, its wet bulb temperature

Induced draft fans provided in large thermal power plant boilers have __________ blades.

Gas turbine normally employs a constant __________ cycle.

Metal cutting by oxy-acetylene flame is accomplished by the __________ of the metal.

If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.

Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.

Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

A pycnometer is used for the measurement of

__________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently.

Oxyacetylene reducing flame is used while carrying out welding on

Dislocations are __________ defects.

Softening of hardened steel is done by its

The activity of pure hydrogen gas at 1000°C and 5 atm pressure

Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.

Notched bar test is used for testing the __________ of a material.

Cemented carbide tools are not suitable for cutting

Fibre glass is a composite material of

Wood is a/an __________ material.

Which one of the following is incombustible?

Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV.

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

Also checkout

Transformer cores are normally made from

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Normalising of a casting does not

Limestone is added in the blast furnace (during pig iron manufacture) to

The majority charge carriers in p-type silicon are

Which of the following is an example of stress corrosion?

In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 = actual measured head & h2 = head imparted to the fluid by impeller).

Which of the following phenomenon will exhibit the minimum heat transfer?

Quartz is a __________ material.

Silicon in steel

The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.

During sensible cooling of air, its wet bulb temperature

Induced draft fans provided in large thermal power plant boilers have __________ blades.

Gas turbine normally employs a constant __________ cycle.

Metal cutting by oxy-acetylene flame is accomplished by the __________ of the metal.

If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.

Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.

Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

A pycnometer is used for the measurement of

__________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently.

Oxyacetylene reducing flame is used while carrying out welding on

Dislocations are __________ defects.

Softening of hardened steel is done by its

The activity of pure hydrogen gas at 1000°C and 5 atm pressure

Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.

Notched bar test is used for testing the __________ of a material.

Cemented carbide tools are not suitable for cutting

Fibre glass is a composite material of

Wood is a/an __________ material.

Which one of the following is incombustible?

Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV.

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

Also checkout

In case of a, centrifugal pump, the ratio h₁/h₂ is termed as the __________ efficiency (where, h₁ = actual measured head & h₂ = head imparted to the fluid by impeller).