Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot

Question

Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot

A. Piercing

B. Spinning

C. Drawing

D. Extrusion

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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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Fog is an example of colloidal system of

A. Solid dispersed in gas

B. Solid dispersed in liquid

C. Liquid dispersed in gas

D. Gas dispersed in liquid

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Electrometallurgy is not involved in the extraction of __________ from its ore.

A. Aluminium

B. Tin

C. Lead

D. Both (B) & (C)

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Dry saturated steam can be converted into superheated steam by

A. Increasing its cross-sectional area of flow

B. Passing it through a pressure reducing valve

C. Forcing it downwards through a vertical tube

D. None of these

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One ton of refrigeration is not equivalent to the heat removal rate of

A. 200 BTU/minute

B. 50 kcal/minute

C. 50 kJ/sec

D. 3.5 KW

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Uniform ramming of sand in green sand moulding process leads to

A. Reduced chance of gas porosity

B. Greater dimensional stability of the casting

C. Uniform flow of molten metal into the mould cavity

D. Less sand expansion type of casting defect

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Dowtherm is a

A. High temperature heating medium (a petroleum product)

B. Product of coal tar distillation

C. Very heat sensitive material

D. None of these

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In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________ increases.

A. Percentage elongation

B. Brinell hardness

C. Tensile strength

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

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Lead is poured into the joint between two __________ pipes.

A. Mild steel

B. Concrete

C. Cast iron

D. Asbestos cement

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__________ is used for tying the steel columns to concrete foundation.

A. Grouting

B. Eyebolt

C. Anchor bolts

D. Refractory castables

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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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Window panes of aeroplanes are normally made of

A. Perspex (PMMA)

B. Teflon (PTFE)

C. Bakelite (phenol formaldehyde)

D. Polystyrene

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Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the

A. Length of the pipe

B. Diameter of the pipe

C. Density of the fluid

D. Velocity of the fluid

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Pressure required to increase the density of water by about 1% is __________ atmosphere.

A. 10

B. 50

C. 200

D. 1000

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Sub zero treatment of steel is done to

A. Suppress martensite transformation

B. Enhance its working performance in sub zero atmosphere

C. Reduce the retained austenite in hardened steel

D. Induce temper brittleness after its hardening

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Pick out the wrong statement.

A. Ductile fracture of a stressed material, which exhibits a large plastic deformation is commonly caused by the formation and coalescence of voids in the necked region

B. Brittle fracture is caused by the propagation of pre-existing cracks in the material and involves minimum plastic deformation

C. Fatigue fracture of a material is always brittle in nature and takes place due to the existence of line imperfections

D. Brittle materials are generally tested in tension

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Eutectoid composition of carbon steel at room temperature is

A. Cementite

B. Pearlite

C. Martensite

D. Ferrite

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The two elements required to form substitutional solid solution should not have

A. Same crystalline structure

B. Same valency

C. Widely differing electronegativity

D. Same atomic sizes

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Plastics as a material of construction suffer from the drawback of low

A. Machinability

B. Density

C. Strength

D. Plastic deformation

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Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying oils?

A. Elaiden test

B. Reichert-Meissl value test

C. Hunter value test

D. Iodine value test

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An abrupt and sudden fall in the reading of barometer is an indication of the

A. Storm

B. Rain

C. Clear weather

D. Cold wave

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The concentration of (H⁺) ions is 4 x 10^-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)

A. 4.4

B. 5.6

C. 8.4

D. 2.4

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All of the following alloying elements of steel increases hardness but sacrifice ductility, except

A. Nickel

B. Vanadium

C. Molybdenum

D. Chromium

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Blast furnace slag is mainly molten

A. Sand

B. Magnesium silicate

C. Calcium silicate

D. Iron pyrite

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Flue gases pass through the following boiler accessories in a high pressure natural circulation boiler.
A. Induced draft fan
B. Economiser
C. Air preheater
D. Steam superheater Which of the following gives the correct sequence of flow of the flue gases through the above mentioned boiler accessories?

A. A, C, B, D

B. D, B, C, A

C. D, C, B, A

D. D, A, B, C

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When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively

A. Decreases & increases

B. Increases & increases

C. Increases & decreases

D. Decreases & decreases

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In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.

A. 20

B. 60

C. 120

D. ∞

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Friction factor for fluid flow in pipe does not depend upon the

A. Pipe length

B. Pipe roughness

C. Fluid density & viscosity

D. Mass flow rate of fluid

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The size of the tetrahedral void in the closest packing of atoms is __________ that of the octahedral void.

A. Equal to

B. Greater than

C. Less than

D. Either (A), (B) or (C); depends on the size of atom

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A material is capable of resisting softening at high temperature, because of its property termed as

A. Hot temper

B. Hot hardness

C. Fatigue

D. Creep

Discuss this answer

Accepted Answer

B. Spinning

Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

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

Fog is an example of colloidal system of

Electrometallurgy is not involved in the extraction of __________ from its ore.

Dry saturated steam can be converted into superheated steam by

One ton of refrigeration is not equivalent to the heat removal rate of

Uniform ramming of sand in green sand moulding process leads to

Dowtherm is a

In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________ increases.

Lead is poured into the joint between two __________ pipes.

__________ is used for tying the steel columns to concrete foundation.

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

Window panes of aeroplanes are normally made of

Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the

Pressure required to increase the density of water by about 1% is __________ atmosphere.

Sub zero treatment of steel is done to

Pick out the wrong statement.

Eutectoid composition of carbon steel at room temperature is

The two elements required to form substitutional solid solution should not have

Plastics as a material of construction suffer from the drawback of low

Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying oils?

An abrupt and sudden fall in the reading of barometer is an indication of the

The concentration of (H⁺) ions is 4 x 10^-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)

All of the following alloying elements of steel increases hardness but sacrifice ductility, except

Blast furnace slag is mainly molten

Flue gases pass through the following boiler accessories in a high pressure natural circulation boiler.
A. Induced draft fan
B. Economiser
C. Air preheater
D. Steam superheater Which of the following gives the correct sequence of flow of the flue gases through the above mentioned boiler accessories?

When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively

In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.

Friction factor for fluid flow in pipe does not depend upon the

The size of the tetrahedral void in the closest packing of atoms is __________ that of the octahedral void.

A material is capable of resisting softening at high temperature, because of its property termed as

Also checkout

Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

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

Fog is an example of colloidal system of

Electrometallurgy is not involved in the extraction of __________ from its ore.

Dry saturated steam can be converted into superheated steam by

One ton of refrigeration is not equivalent to the heat removal rate of

Uniform ramming of sand in green sand moulding process leads to

Dowtherm is a

In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________ increases.

Lead is poured into the joint between two __________ pipes.

__________ is used for tying the steel columns to concrete foundation.

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

Window panes of aeroplanes are normally made of

Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the

Pressure required to increase the density of water by about 1% is __________ atmosphere.

Sub zero treatment of steel is done to

Pick out the wrong statement.

Eutectoid composition of carbon steel at room temperature is

The two elements required to form substitutional solid solution should not have

Plastics as a material of construction suffer from the drawback of low

Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying oils?

An abrupt and sudden fall in the reading of barometer is an indication of the

The concentration of (H+) ions is 4 x 10-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)

All of the following alloying elements of steel increases hardness but sacrifice ductility, except

Blast furnace slag is mainly molten

Flue gases pass through the following boiler accessories in a high pressure natural circulation boiler.A. Induced draft fanB. EconomiserC. Air preheaterD. Steam superheater Which of the following gives the correct sequence of flow of the flue gases through the above mentioned boiler accessories?

When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively

In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.

Friction factor for fluid flow in pipe does not depend upon the

The size of the tetrahedral void in the closest packing of atoms is __________ that of the octahedral void.

A material is capable of resisting softening at high temperature, because of its property termed as

Also checkout

The concentration of (H⁺) ions is 4 x 10^-5 in a solution. Then pH of the solution will be (Given log 4 = 0.6)