Temperature profile along the length of a gasgas counter flow heat exchanger is correctly represented by

Question

Temperature profile along the length of a gasgas counter flow heat exchanger is correctly represented by

A.

B.

C.

D.

Correct Answer :

A.

Share this question with your friends

Show all Chemical Engineering Basics MCQ

Comment

Viscoelastic behaviour is observed in __________ materials.

Discuss this answer

The main reducing agent in iron blast furnace is

C. Oxygen

D. Air

Discuss this answer

What is the range of tempering temperature (°C) for most of the materials?

A. 75-100

Discuss this answer

Pick out the wrong statement about nucleate boiling.

Discuss this answer

Corrosion of metals cannot be prevented by its

Discuss this answer

With increase in temperature, the electrical conductivity of a __________ decreases.

Discuss this answer

The behaviour of a metal specimen, which when plastically strained in tension reduces its yield stress in compression and vice versa; is termed as the

Discuss this answer

In extrusion of metals, which of the following statement is true?

Discuss this answer

Propulsion of rocket follows from the

Discuss this answer

Joule-Thomson co-efficient is the ratio of

Discuss this answer

While the bin cards are used in the effective stores management, the queuing theory is associated with the __________ time.

B. Idle

Discuss this answer

In connection with corrosion of metals, passivation is the process that

Discuss this answer

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

A. Air

B. Oxygen

Discuss this answer

The activity co-efficient of the solute in a dilute solution

Discuss this answer

Which of the following is not a principal alloying element for the structural steel?

B. Nickel

Discuss this answer

In case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is

A. 1

B. 1.4

C. 1.5

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

Pick out the wrong statement.

Discuss this answer

Sub zero treatment of steel is done to

Discuss this answer

Out of the following, the lowest packing of atoms exists in __________ crystal lattice structure.

Discuss this answer

Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

Discuss this answer

In a neutral solution

Discuss this answer

Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is

A. Black

C. Green

D. Yellow

Discuss this answer

Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.

A. 746

B. 3000

C. 1000

D. 550

Discuss this answer

In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean temperature difference) for counter flow as compared to that for parallel flow is

A. More

B. Less

C. Equal

Discuss this answer

Copper deposits are found in India at the following location:

B. Kolar

C. Khetri

Discuss this answer

Super conduction in metals is observed at a temperature of __________ °K.

A. <100

B. >100

Discuss this answer

Pick out the correct combination about the role of various additives used in polymers.

Discuss this answer

Spheroidising of a material is a/an __________ process.

Discuss this answer

An alloy of Fe - 0.4 % C is

Discuss this answer

Answer 1

A. Non-crystalline organic polymeric

Answer 2

B. Ceramic

Answer 3

C. All crystalline

Answer 4

D. All amorphous

Answer 5

A. Carbon dioxide

Answer 6

B. Carbon monoxide

Answer 7

B. 200-300

Answer 8

C. 350-450

Answer 9

D. 500-600

Answer 10

A. Bubble generation is by expansion of entrapped gas/vapour at small cavities in the surface

Answer 11

B. Surface temperature is greater than the saturation temperature of the liquid

Answer 12

C. Heat transfer from the surface of the liquid is less than that in film boiling

Answer 13

D. The temperature is less than that of film boiling

Answer 14

A. Tempering

Answer 15

B. Chromising

Answer 16

C. Aluminising

Answer 17

D. Alloying

Answer 18

A. Semi-conductor

Answer 19

B. Metal or alloy

Answer 20

C. Dielectric

Answer 21

D. None of these

Answer 22

A. Work hardening

Answer 23

B. Bauschinger effect

Answer 24

C. Creeping effect

Answer 25

D. Stress recovery effect

Answer 26

A. Speed of the extruded material is same as that of ram speed

Answer 27

B. Redundant work is a function of the die angle

Answer 28

C. Relative motion between the billet surface and the container wall is always present

Answer 29

D. Hollow ram is used for indirect extrusion

Answer 30

A. Newton's second law of motion

Answer 31

B. Newton's third law of motion

Answer 32

C. Law of projectiles

Answer 33

D. Archimedes principle

Answer 34

A. Pressure change to temperature change occuring during adiabatic compression of a gas

Answer 35

B. Pressure change to temperature change occuring during adiabatic throttling of a gas

Answer 36

C. Temperature change to pressure change occuring during adiabatic compression of a gas

Answer 37

D. Temperature change to pressure change occuring during adiabatic throttling of a gas

Answer 38

A. Waiting

Answer 39

C. Inspection

Answer 40

D. Tool replacement

Answer 41

A. Intensifies deterioration

Answer 42

B. Changes the composition of the metal

Answer 43

C. Inhibits further deterioration

Answer 44

D. None of these

Answer 45

C. Liquid medium

Answer 46

D. Gaseous medium

Answer 47

A. Decreases with the increase of concentration of the solute

Answer 48

B. Increases with the increase of concentration of the solute

Answer 49

C. Remains constant

Answer 50

D. Is unity at infinite dilution

Answer 51

A. Molybdenum

Answer 52

C. Manganese

Answer 53

D. Chromium

Answer 54

D. Y = C_p/C_v

Answer 55

A. A ferromagnetic material becomes paramagnetic above the 'Curie temperature'

Answer 56

B. Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic materials

Answer 57

C. Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and coercive forces

Answer 58

D. Tungsten steel and alnico are not hard magnetic materials

Answer 59

A. Suppress martensite transformation

Answer 60

B. Enhance its working performance in sub zero atmosphere

Answer 61

C. Reduce the retained austenite in hardened steel

Answer 62

D. Induce temper brittleness after its hardening

Answer 63

A. Hexagonal close, packed (hcp)

Answer 64

B. Face centred cubic (fcc)

Answer 65

C. Body centred cubic (bcc)

Answer 66

D. Simple cubic

Answer 67

A. Grashoff number

Answer 68

B. Grashoff number & Reynolds number

Answer 69

C. Reynolds number

Answer 70

D. Grashoff number & Prandtl number

Answer 71

A. H⁺ ions are absent

Answer 72

B. OH^- ions are absent

Answer 73

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

Answer 74

D. None of these

Answer 75

B. Silver grey

Answer 76

D. Much more

Answer 77

A. Kudremukh

Answer 78

D. Ramagundam

Answer 79

C. About 273

Answer 80

D. About 373

Answer 81

A. Plasticiser: increases the polymer strength

Answer 82

B. Heat stabiliser: increases the maximum service temperature

Answer 83

C. Fillers: Does not affect the property of polymer but increases its weight

Answer 84

D. Lubricants: increases the flexibility of polymers

Answer 85

A. Normalising

Answer 86

B. Annealing

Answer 87

C. Tempering

Answer 88

D. Hardening

Answer 89

A. Cast iron

Answer 90

B. Hypo-eutectoid steel

Answer 91

C. Hyper-eutectoid steel

Answer 92

D. Eutectoid steel

Temperature profile along the length of a gasgas counter flow heat exchanger is correctly represented by

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Viscoelastic behaviour is observed in __________ materials.

The main reducing agent in iron blast furnace is

What is the range of tempering temperature (°C) for most of the materials?

Pick out the wrong statement about nucleate boiling.

Corrosion of metals cannot be prevented by its

With increase in temperature, the electrical conductivity of a __________ decreases.

The behaviour of a metal specimen, which when plastically strained in tension reduces its yield stress in compression and vice versa; is termed as the

In extrusion of metals, which of the following statement is true?

Propulsion of rocket follows from the

Joule-Thomson co-efficient is the ratio of

While the bin cards are used in the effective stores management, the queuing theory is associated with the __________ time.

In connection with corrosion of metals, passivation is the process that

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

The activity co-efficient of the solute in a dilute solution

Which of the following is not a principal alloying element for the structural steel?

In case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is

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).

Pick out the wrong statement.

Sub zero treatment of steel is done to

Out of the following, the lowest packing of atoms exists in __________ crystal lattice structure.

Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

In a neutral solution

Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is

Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.

In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean temperature difference) for counter flow as compared to that for parallel flow is

Copper deposits are found in India at the following location:

Super conduction in metals is observed at a temperature of __________ °K.

Pick out the correct combination about the role of various additives used in polymers.

Spheroidising of a material is a/an __________ process.

An alloy of Fe - 0.4 % C is

Also checkout

Temperature profile along the length of a gasgas counter flow heat exchanger is correctly represented by

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Viscoelastic behaviour is observed in __________ materials.

The main reducing agent in iron blast furnace is

What is the range of tempering temperature (°C) for most of the materials?

Pick out the wrong statement about nucleate boiling.

Corrosion of metals cannot be prevented by its

With increase in temperature, the electrical conductivity of a __________ decreases.

The behaviour of a metal specimen, which when plastically strained in tension reduces its yield stress in compression and vice versa; is termed as the

In extrusion of metals, which of the following statement is true?

Propulsion of rocket follows from the

Joule-Thomson co-efficient is the ratio of

While the bin cards are used in the effective stores management, the queuing theory is associated with the __________ time.

In connection with corrosion of metals, passivation is the process that

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

The activity co-efficient of the solute in a dilute solution

Which of the following is not a principal alloying element for the structural steel?

In case of compression of one kg of air, the work done will be the least, when the value of polytropic index 'n' is

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

Pick out the wrong statement.

Sub zero treatment of steel is done to

Out of the following, the lowest packing of atoms exists in __________ crystal lattice structure.

Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

In a neutral solution

Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is

Thermal equivalent of electrical power in practical calculation is __________ kcal/kWh.

In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean temperature difference) for counter flow as compared to that for parallel flow is

Copper deposits are found in India at the following location:

Super conduction in metals is observed at a temperature of __________ °K.

Pick out the correct combination about the role of various additives used in polymers.

Spheroidising of a material is a/an __________ process.

An alloy of Fe - 0.4 % C is

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).