Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans?

Question

Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans?

A. Emissivity of pipe surface

B. Diameter & length of the pipe

C. Temperature of hot pipe surface & that of air in the room

D. None of these

Share this question with your friends

Show all Chemical Engineering Basics MCQ

Comment

Stellite is a __________ material.

A. Ferrous

B. Ceramic

C. Cemented carbide

D. Non-ferrous cast alloy cutting tool

Discuss this answer

Diffusion co-efficient of a metal in a solid solution depends upon its

A. Composition

B. Temperature

C. Both (A) & (B)

D. Neither (A) nor (B)

Discuss this answer

Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.

A. Slip

B. Fracture

C. Winning

D. Dislocation

Discuss this answer

While the recrystallisation temperature for pure metals is 0.3 T_m, the same for alloys is equal to __________ × T_m (where, T_m Melting temperature).

A. 0.25

B. 0.45

C. 0.70

D. 0.95

Discuss this answer

The following type of bonding is strongly directional in solids.

A. Vander Waal's

B. Ionic

C. Metallic

D. Covalent

Discuss this answer

On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is

A. Creep

B. Toughness

C. Tensile strength

D. Fatigue

Discuss this answer

Which of the following metals is the most prone to work hardening?

A. Brass

B. Aluminium

C. Copper

D. Lead

Discuss this answer

For separating small pieces of metal from engine oil of a car, the best separating technique is the

A. Chromatography

B. Evaporation

C. Filtration

D. Fractional distillation

Discuss this answer

The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is

A. Full annealing

B. Bright annealing

C. Patenting

D. None of these

Discuss this answer

For an ideal gas, C_p - C_v is

A. R

B. -R

C. 0

D. (3/2) R

Discuss this answer

Carbon is present in the form of __________ in grey cast iron.

A. Spheroids

B. Nodular aggregates of graphite

C. Flakes

D. Cementite

Discuss this answer

Iron content in Indian iron ore is about __________ percent.

A. 80-85

B. 60-65

C. 40-45

D. 20-25

Discuss this answer

What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m². °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively.

A. 2

B. 8

C. 10

D. 40

Discuss this answer

Which of the following metals is not subjected to electrolytic refining/purification?

A. Copper

B. Zinc

C. Tin

D. Aluminium

Discuss this answer

Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and

A. Manganese

B. Silicon

C. Nickel

D. Chromium

Discuss this answer

Work study deals with the __________ study.

A. Time

B. Motion

C. Both (A) & (B)

D. Neither (A) nor (B)

Discuss this answer

For preparation of porous bearings by powder metallurgy, preferred particle shape is

A. Spherical

B. Nodular

C. Irregular

D. No preferred shape

Discuss this answer

Name the safety device used to protect the boiler, when the water level falls below a minimum level.

A. Blow down valve

B. Blow off cock

C. Fusible plug

D. Safety valve

Discuss this answer

Annealing of white cast iron produces __________ iron.

A. Grey

B. Nodular

C. Malleable

D. Spheroidal

Discuss this answer

Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.

A. Fracture

B. Dislocation

C. Slip

D. Twinning

Discuss this answer

Filler material used in welding should have __________ as compared to the parent metal to be welded.

A. Lower melting temperature

B. Same melting temperature

C. Same composition

D. Both 'b' & 'c'

Discuss this answer

__________ the exhaust gas is an indication of the incomplete combustion of fuel.

A. Low temperature of

B. High temperature of

C. High % of CO in

D. High % of CO₂ in

Discuss this answer

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

Discuss this answer

Case hardening is not done by

A. Nitriding

B. Hot dipping

C. Electroplating

D. Both b & c

Discuss this answer

Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are

A. Cobalt, chromium & tungsten

B. Cobalt, chromium & nickel

C. Molybdenum, tungsten & chromium

D. Cobalt, zirconium & molybdenum

Discuss this answer

The minimum carbon content in steel should be __________ percent for it to respond to a hardening treatment.

A. 0.2

B. 0.4

C. 0.6

D. 0.8

Discuss this answer

Laser is a device to produce

A. Gamma rays

B. Microwaves

C. A beam of white light

D. A beam of coherent light

Discuss this answer

Insulation of liquid surface can be achieved by __________ on top of its surface.

A. Floating hollow polypropylene spheres

B. Spraying alumina powder

C. Putting cement

D. None of these

Discuss this answer

Unit of surface tension in S.I. unit is

A. Watt/m

B. Joule/

C. Newton/

D. Joule/m

Discuss this answer

Sudden fall of atmospheric pressure by a large amount is an indication of the

A. Rain

B. Cold wave

C. Storm

D. Fair weather

Discuss this answer

Accepted Answer

D. None of these

Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans?

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Stellite is a __________ material.

Diffusion co-efficient of a metal in a solid solution depends upon its

Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.

While the recrystallisation temperature for pure metals is 0.3 T_m, the same for alloys is equal to __________ × T_m (where, T_m Melting temperature).

The following type of bonding is strongly directional in solids.

On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is

Which of the following metals is the most prone to work hardening?

For separating small pieces of metal from engine oil of a car, the best separating technique is the

The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is

For an ideal gas, C_p - C_v is

Carbon is present in the form of __________ in grey cast iron.

Iron content in Indian iron ore is about __________ percent.

What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m². °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively.

Which of the following metals is not subjected to electrolytic refining/purification?

Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and

Work study deals with the __________ study.

For preparation of porous bearings by powder metallurgy, preferred particle shape is

Name the safety device used to protect the boiler, when the water level falls below a minimum level.

Annealing of white cast iron produces __________ iron.

Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.

Filler material used in welding should have __________ as compared to the parent metal to be welded.

__________ the exhaust gas is an indication of the incomplete combustion of fuel.

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

Case hardening is not done by

Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are

The minimum carbon content in steel should be __________ percent for it to respond to a hardening treatment.

Laser is a device to produce

Insulation of liquid surface can be achieved by __________ on top of its surface.

Unit of surface tension in S.I. unit is

Sudden fall of atmospheric pressure by a large amount is an indication of the

Also checkout

Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans?

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Stellite is a __________ material.

Diffusion co-efficient of a metal in a solid solution depends upon its

Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.

While the recrystallisation temperature for pure metals is 0.3 Tm, the same for alloys is equal to __________ × Tm (where, Tm Melting temperature).

The following type of bonding is strongly directional in solids.

On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is

Which of the following metals is the most prone to work hardening?

For separating small pieces of metal from engine oil of a car, the best separating technique is the

The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is

For an ideal gas, Cp - Cv is

Carbon is present in the form of __________ in grey cast iron.

Iron content in Indian iron ore is about __________ percent.

What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m2. °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively.

Which of the following metals is not subjected to electrolytic refining/purification?

Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and

Work study deals with the __________ study.

For preparation of porous bearings by powder metallurgy, preferred particle shape is

Name the safety device used to protect the boiler, when the water level falls below a minimum level.

Annealing of white cast iron produces __________ iron.

Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.

Filler material used in welding should have __________ as compared to the parent metal to be welded.

__________ the exhaust gas is an indication of the incomplete combustion of fuel.

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

Case hardening is not done by

Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are

The minimum carbon content in steel should be __________ percent for it to respond to a hardening treatment.

Laser is a device to produce

Insulation of liquid surface can be achieved by __________ on top of its surface.

Unit of surface tension in S.I. unit is

Sudden fall of atmospheric pressure by a large amount is an indication of the

Also checkout

While the recrystallisation temperature for pure metals is 0.3 T_m, the same for alloys is equal to __________ × T_m (where, T_m Melting temperature).

For an ideal gas, C_p - C_v is

What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m². °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively.