Coating provided on the electrodes used in the arc welding is not expected to

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Coating provided on the electrodes used in the arc welding is not expected to

A. Add alloying elements

B. Prevent electrode from contamination

C. Stabilise the arc

D. Provide protective atmosphere to weld

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Lead is added to 60:40 brass primarily to improve

A. Machinability

B. Corrosion resistance

C. Fluidity

D. Strength

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Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called

A. Tempering

B. Hardening

C. Annealing

D. Normalising

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If the head is doubled in & centrifugal pump, the power required will increase in the ratio of

A. 2³

B. 2^3/2

C. 2^5/2

D. 2^1/3

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Which of the following is not a ferromagnetic material?

A. Nickel

B. Cobalt

C. Aluminium

D. Iron

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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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The product out from a cupola is called

A. Wrought iron

B. Pig iron

C. Cast iron

D. None of these

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Electrochemical corrosion can occur, only if __________ is present in contact with metal.

A. Air

B. Oxygen

C. Liquid medium

D. Gaseous medium

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Exposure to __________ accelerates the degradation of plastics.

A. Ultraviolet radiation

B. High atmospheric temperature

C. High ambient temperature

D. Damp atmosphere

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Pick out the wrong statement about coating/electroplating of metals.

A. Phosphate coating is used as an excellent base for paints & enamels

B. Phosphate coating is less corrosion resistant than chromate coating

C. The base metal to be electroplated is normally made the cathode of the electrolytic cell and coating metal is made the anode

D. Calorising is the process of coating steel with chromium

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Theoretical volume of oxygen required for complete combustion of 1Nm³ of acetylene, in oxyacetylene welding is __________ Nm³.

A. 0.5

B. 1

C. 1/3

D. 2.5

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Corrosion of metals cannot be prevented by its

A. Tempering

B. Chromising

C. Aluminising

D. Alloying

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The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x^0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge)

A. x^1.5

B. x^0.8

C. x^-1.5

D. x^-0.8

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Liquid nitrogen containers can be made from

A. Ferritic stainless steel

B. HSLA steel

C. Titanium

D. Austenitic stainless steel

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LVDT used for displacement measurement is a/an __________ transducer.

A. Passive

B. Active

C. Capacitive

D. None of these

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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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Cast iron contains __________ percent carbon.

A. 2.5

B. 3.75

C. 4.75

D. 5.25

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Annealing of cast iron

A. Softens it to facilitate machining

B. Decreases the free carbon

C. Increases the strength

D. None of these

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Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?

A. Enthalpy

B. Relative humidity

C. Wet bulb temperature

D. Dew point temperature

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Gantt charts are used for streamlining the

A. Inventory control

B. Production schedule

C. Sales forecasting

D. Quality control

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In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

A. Range is 15°F

B. Approach is 10°F

C. Both (A) & (B)

D. Neither (A) nor (B)

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'Amortization' in respect of financial obligation of a company means the

A. Liquidation of financial obligations on instalment basis

B. Commitment of financial obligation on priority

C. Liquidation of all the obsolete equipments of the company

D. Modernisation of the plant equipments

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Solute atoms which cause yield point phenomenon in mild steel are/is

A. Aluminium

B. Boron

C. Carbon

D. Nitrogen

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Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.

A. Film

B. Nucleate

C. Transition

D. All modes of

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Pick out the correct statement.

A. Materials exhibiting high elasticity obey Hooke's law

B. The elastic behaviour of rubber under compression is the same as its behaviour under tension

C. The damping capacity of a material is due to its plastic deformation

D. The stress required to cause plastic flow in polycrystalline material is higher as compared to monocrystalline materials due to the presence of grains of different orientations

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For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg)?

A. Propane and acetylene

B. Propane and LPG

C. Sewage gas and gobar gas

D. B.F gas and coke oven gas

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In a neutral solution

A. H⁺ ions are absent

B. OH^- ions are absent

C. Both H⁺ and OH^- ions are present in very small but equal concentration

D. None of these

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Pick out the correct statement about the condensation.

A. Filmwise condensation gives a lower heat transfer rate than the dropwise condensation

B. Suitable coating or vapour additive is used to promote film wise condensation

C. If a condensing liquid does not wet the surface dropwise, even then condensation will take place on it

D. Reynolds number of condensing liquid is based on its mass flow rate

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A spring material should have low

A. Elastic limit

B. Deflection value

C. Fatigue resistance

D. None of these

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Use of flux during soldering is done to

A. Increase fluidity of solder by lowering its melting temperature

B. Prevent oxide formation

C. Wash away surplus solder

D. Full up the joint gap

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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

Discuss this answer

Accepted Answer

B. Prevent electrode from contamination

Coating provided on the electrodes used in the arc welding is not expected to

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Lead is added to 60:40 brass primarily to improve

Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called

If the head is doubled in & centrifugal pump, the power required will increase in the ratio of

Which of the following is not a ferromagnetic material?

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

The product out from a cupola is called

Electrochemical corrosion can occur, only if __________ is present in contact with metal.

Exposure to __________ accelerates the degradation of plastics.

Pick out the wrong statement about coating/electroplating of metals.

Theoretical volume of oxygen required for complete combustion of 1Nm³ of acetylene, in oxyacetylene welding is __________ Nm³.

Corrosion of metals cannot be prevented by its

The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x^0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge)

Liquid nitrogen containers can be made from

LVDT used for displacement measurement is a/an __________ transducer.

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

Cast iron contains __________ percent carbon.

Annealing of cast iron

Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?

Gantt charts are used for streamlining the

In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

'Amortization' in respect of financial obligation of a company means the

Solute atoms which cause yield point phenomenon in mild steel are/is

Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.

Pick out the correct statement.

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg)?

In a neutral solution

Pick out the correct statement about the condensation.

A spring material should have low

Use of flux during soldering is done to

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

Also checkout

Coating provided on the electrodes used in the arc welding is not expected to

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Lead is added to 60:40 brass primarily to improve

Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called

If the head is doubled in & centrifugal pump, the power required will increase in the ratio of

Which of the following is not a ferromagnetic material?

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

The product out from a cupola is called

Electrochemical corrosion can occur, only if __________ is present in contact with metal.

Exposure to __________ accelerates the degradation of plastics.

Pick out the wrong statement about coating/electroplating of metals.

Theoretical volume of oxygen required for complete combustion of 1Nm3 of acetylene, in oxyacetylene welding is __________ Nm3.

Corrosion of metals cannot be prevented by its

The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge)

Liquid nitrogen containers can be made from

LVDT used for displacement measurement is a/an __________ transducer.

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

Cast iron contains __________ percent carbon.

Annealing of cast iron

Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?

Gantt charts are used for streamlining the

In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

'Amortization' in respect of financial obligation of a company means the

Solute atoms which cause yield point phenomenon in mild steel are/is

Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.

Pick out the correct statement.

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3) while the C.V. is same on weight basis (i.e., kcal/kg)?

In a neutral solution

Pick out the correct statement about the condensation.

A spring material should have low

Use of flux during soldering is done to

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

Also checkout

Theoretical volume of oxygen required for complete combustion of 1Nm³ of acetylene, in oxyacetylene welding is __________ Nm³.

The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x^0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge)

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg)?