L.D. (Linz-Donawitz) converter is used in the production of

Question

L.D. (Linz-Donawitz) converter is used in the production of

A. Copper

B. Steel

C. Zinc

Correct Answer :

B. Steel

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Unbreakable crockeries are made from __________ polymers.

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Which of the following fastening devices has a head at one end and a nut fitted to the other?

A. Bolt

B. Stud

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Work done by a/an __________ process is determined by ∫p. dv

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Cold heading or upsetting is categorised as the __________ process.

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About __________ ton of coke is required in a cupola to produce one ton of casting.

A. 0.03

B. 0.3

C. 0.8

D. 1.5

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Larger length & diameter water pipes are made by

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For grinding of softer materials, the grinding wheel should have __________ grain size.

A. Finer

C. Medium

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Which of the following represents the correct time-temperature curve when a block of metal is heated above room temperature & then left to cool in the room following Newton's law of cooling in which the rate of temperature drop will go on decreasing with the passage of time.

A.

B.

C.

D.

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Maraging steels derive their strength from the following mechanism:

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If a solid is compressed adiabatically in its elastic range, its __________ remains constant

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The pressure outside a bubble/droplet of liquid is __________ the internal pressure.

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Dies for wire drawing are generally made of

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Which of the following is preferred for riveting?

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Enzymes belong to the category of

D. Fats

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In the diving apparatus, helium is used along with oxygen, because it is

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The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is

A. More

B. Less

C. Same

Discuss this answer

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

Discuss this answer

Boiler tube size is specified by its thickness and __________ diameter.

B. Inside

C. Mean

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Spheroidising of a material is a/an __________ process.

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Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode

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Between 230 and 370°C, blue brittleness is caused in mild steel because of the

Discuss this answer

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

Discuss this answer

With increase in temperature, the electrical conductivity of semiconductors

Discuss this answer

Magnetic permeability of iron is increased by its

Discuss this answer

Which of the following approaches the ideal gas behaviour most closely?

Discuss this answer

Specific __________ is a dimensionless quantity.

A. Heat

C. Weight

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Yield strength of a polycrystalline metal with an average grain size d, is proportional to

A. d^1/2

B. d^-1/2

C. d

D. d^-1

Discuss this answer

The condition of diffraction from a crystal is given by

Discuss this answer

Tempering of a material does not improve its

Discuss this answer

Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than

A. 5

B. 10

C. 20

D. 35

Discuss this answer

Answer 1

D. Aluminium

Answer 2

A. Polystyrene

Answer 3

B. Melamine

Answer 4

C. Polystyrene

Answer 5

D. Polyurethane

Answer 6

C. Top bolt

Answer 7

D. None of these

Answer 8

A. Adiabatic

Answer 9

B. Quasi-static

Answer 10

C. Isothermal

Answer 11

D. Isentropic

Answer 12

A. Extrusion

Answer 13

B. Bending

Answer 14

C. Rolling

Answer 15

D. Forging

Answer 16

A. Electrical resistance welding

Answer 17

B. Die casting

Answer 18

C. Semi-centrifugal casting

Answer 19

D. Continuous casting

Answer 20

B. Coarser

Answer 21

D. Any type of

Answer 22

A. A fine, highly dislocated and strong martensite

Answer 23

B. Fine dispersions of inter-metallic of Fe, Ni, Ti etc

Answer 24

C. Fine dispersions of alloy carbides in a ferrite matrix

Answer 25

D. Fine dispersions of

C nucleated on dislocations in austenite

Answer 26

A. Internal energy

Answer 27

B. Enthalpy

Answer 28

C. Entropy

Answer 29

D. Temperature

Answer 30

A. Greater than

Answer 31

B. Less than

Answer 32

C. Equal to

Answer 33

D. Unpredictable; depends on the bubble size

Answer 34

A. Mild steel

Answer 35

B. Stainless steel

Answer 36

C. Carbides

Answer 37

D. High carbon steel

Answer 38

A. Lap joint

Answer 39

B. Butt joint

Answer 40

C. Either (A) or (B)

Answer 41

D. Neither (A) nor (B)

Answer 42

A. Proteins

Answer 43

B. Carbohydrates

Answer 44

C. Vitamins

Answer 45

A. Easily available

Answer 46

B. Not soluble in blood at high pressure

Answer 47

C. Lighter than nitrogen

Answer 48

D. Completely miscible with oxygen

Answer 49

D. More but less than the diameter of bolt

Answer 50

A. Spherical

Answer 51

B. Nodular

Answer 52

C. Irregular

Answer 53

D. No preferred shape

Answer 54

A. Outside

Answer 55

D. None of these

Answer 56

A. Normalising

Answer 57

B. Annealing

Answer 58

C. Tempering

Answer 59

D. Hardening

Answer 60

A. Occurs higher in the electro-chemical series of metals

Answer 61

B. Is exemplified by magnesium plate

Answer 62

C. Is much cheaper than the cathodic base material to be guarded against corrosion

Answer 63

D. All (A), (B) & (C)

Answer 64

A. Immobility of dislocation

Answer 65

B. Strain-ageing

Answer 66

C. Increase in Young's modulus

Answer 67

D. Strain hardening

Answer 68

A. Semi-conductor

Answer 69

B. Metal or alloy

Answer 70

C. Dielectric

Answer 71

D. None of these

Answer 72

A. Increases

Answer 73

B. Decreases

Answer 74

C. Remain constant

Answer 75

D. Either (A) or (B), depends on the type of semi-conductor

Answer 76

A. Decarburising

Answer 77

B. Alloying with cobalt

Answer 78

C. Purification

Answer 79

D. Alternate heating & cooling

Answer 80

A. Wet steam

Answer 81

B. Saturated steam

Answer 82

C. Superheated steam

Answer 83

D. Saturated water

Answer 84

B. Humidity

Answer 85

D. None of these

Answer 86

A. nλ = 2d Sin θ

Answer 87

B. λ = d Sin 2θ

Answer 88

C. λ = 2d Sin 2θ

Answer 89

D. nλ = d Sin θ

Answer 90

A. Machinability

Answer 91

B. Toughness

Answer 92

C. Internal stress level

Answer 93

D. Softness

L.D. (Linz-Donawitz) converter is used in the production of

Correct Answer :

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Related Questions

Unbreakable crockeries are made from __________ polymers.

Which of the following fastening devices has a head at one end and a nut fitted to the other?

Work done by a/an __________ process is determined by ∫p. dv

Cold heading or upsetting is categorised as the __________ process.

About __________ ton of coke is required in a cupola to produce one ton of casting.

Larger length & diameter water pipes are made by

For grinding of softer materials, the grinding wheel should have __________ grain size.

Which of the following represents the correct time-temperature curve when a block of metal is heated above room temperature & then left to cool in the room following Newton's law of cooling in which the rate of temperature drop will go on decreasing with the passage of time.

Maraging steels derive their strength from the following mechanism:

If a solid is compressed adiabatically in its elastic range, its __________ remains constant

The pressure outside a bubble/droplet of liquid is __________ the internal pressure.

Dies for wire drawing are generally made of

Which of the following is preferred for riveting?

Enzymes belong to the category of

In the diving apparatus, helium is used along with oxygen, because it is

The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is

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

Boiler tube size is specified by its thickness and __________ diameter.

Spheroidising of a material is a/an __________ process.

Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode

Between 230 and 370°C, blue brittleness is caused in mild steel because of the

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

With increase in temperature, the electrical conductivity of semiconductors

Magnetic permeability of iron is increased by its

Which of the following approaches the ideal gas behaviour most closely?

Specific __________ is a dimensionless quantity.

Yield strength of a polycrystalline metal with an average grain size d, is proportional to

The condition of diffraction from a crystal is given by

Tempering of a material does not improve its

Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than

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