The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.

Question

The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.

A. 768

B. 908

C. 1400

D. 1539

Correct Answer :

A. 768

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The fugacity of liquid water at 298 K is approximately 3171 P_a. Considering the ideal heat of vaporisation as 43723 J/gm.mole, its fugacity at 300 K would be

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D. Heavy

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D. Shear

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Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of

A. Steel

C. Copper

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Out of the following, which will fracture most readity, when hit with a hard hammer?

A. Brass

B. Bronze

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Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress.

C. Yield

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A jig is used while __________ a hole.

A. Boring

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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?

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

A. Brass

C. Copper

D. Lead

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Out of the following, the most malleable material is

A. Copper

D. Lead

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In case of water (Prandtl number ≈ 6) flowing over a flat plate heated over the entire length, the thermal boundary layer thickness as compared to hydrodynamic boundary layer thickness is

A. Less

B. More

C. Equal

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Which of the following can be manufactured using powder metallurgy techniques?

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__________ fluid force is not considered in the Navier-Stokes equation.

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An alloy of Fe - 0.4 % C is

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Which of the following is not the function of a volute casing provided in a centrifugal pump?

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For a first order chemical reaction, the concentration of the reactant decreases __________ with time.

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

A. Finer

C. Medium

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The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________ at room temperature.

A. Air

B. Water

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Hydro-cyclone is a

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Thermodynamic cycle involved in the working of a thermal power plant is the __________ cycle.

A. Joule

B. Carnot

Discuss this answer

__________ cannot increase the fatigue strength of a material.

Discuss this answer

With increase in temperature, the surface tension of water

Discuss this answer

Capacity & power requirement for an air compressor working at high altitude compared to sealevel will be

A. More

B. Less

C. Same

Discuss this answer

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

Discuss this answer

Answer 1

A. 3171P_a

Answer 2

B. 3567P_a

Answer 3

C. 1.01 × 10⁵P_a

Answer 4

D. 5000P_a

Answer 5

A. Electronic

Answer 6

B. Structural

Answer 7

C. Process

Answer 8

A. Tension

Answer 9

B. Compression

Answer 10

C. Torsion

Answer 11

A. Copper-lead alloys

Answer 12

B. Babbitts

Answer 13

C. Bronzes

Answer 14

D. Cermets

Answer 15

A. Intensifies deterioration

Answer 16

B. Changes the composition of the metal

Answer 17

C. Inhibits further deterioration

Answer 18

D. None of these

Answer 19

B. Glass wood

Answer 20

D. Fireclay bricks

Answer 21

C. German silver

Answer 22

D. Cast iron

Answer 23

A. Working

Answer 24

B. Bearing

Answer 25

D. None of these

Answer 26

B. Counter boring

Answer 27

C. Drilling

Answer 28

D. Enlarging

Answer 29

A. Enthalpy

Answer 30

B. Relative humidity

Answer 31

C. Wet bulb temperature

Answer 32

D. Dew point temperature

Answer 33

B. Aluminium

Answer 34

B. Aluminium

Answer 35

C. Wrought iron

Answer 36

D. Unpredictable

Answer 37

A. Shear stress is maximum

Answer 38

B. Velocity gradient is flat

Answer 39

C. Density variation is maximum

Answer 40

D. Shear stress is zero

Answer 41

A. Brake linings

Answer 42

B. Bearings

Answer 43

C. Carbide tool tips

Answer 44

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

Answer 45

A. Turbulent

Answer 46

B. Viscous

Answer 47

C. Gravity

Answer 48

D. Pressure

Answer 49

A. Cast iron

Answer 50

B. Hypo-eutectoid steel

Answer 51

C. Hyper-eutectoid steel

Answer 52

D. Eutectoid steel

Answer 53

A. To reduce the head loss in discharge

Answer 54

B. To increase the pump efficiency

Answer 55

C. To collect liquid from the periphery of the impeller and to transmit it to the delivery pipe at constant velocity

Answer 56

D. To increase the pump discharge rate

Answer 57

A. Linearly

Answer 58

B. Exponentially

Answer 59

C. Logarithmically

Answer 60

D. Inversely

Answer 61

B. Coarser

Answer 62

D. Any type of

Answer 63

C. Mercury

Answer 64

D. Alcohol

Answer 65

A. A site, where cooling towers are located nearby

Answer 66

B. A site, where open coal yard in located nearby

Answer 67

C. An air conditioned room maintained at a temperature of 18°C

Answer 68

D. An outside atmosphere at 10°C

Answer 69

A. Capillary action

Answer 70

B. Adhesion

Answer 71

C. Cohesion

Answer 72

D. Surface tension

Answer 73

A. Crusher

Answer 74

B. wet classifier

Answer 75

C. Dry classifier

Answer 76

D. Magnetic separator

Answer 77

C. Rankine

Answer 78

D. Brayton

Answer 79

A. Grain refining

Answer 80

B. Grain coarsening

Answer 81

C. Surface hardening

Answer 82

D. Shot peening

Answer 83

A. Increases

Answer 84

B. Decreases

Answer 85

C. Remain constant

Answer 86

D. Increases linearly

Answer 87

D. Either more or less; depends on the climatic conditions

Answer 88

A. Seamless & made of steel

Answer 89

B. Heat treated before use

Answer 90

C. Made by sand casting

Answer 91

D. Welded steel cylinders

Answer 92

A. Greater than

Answer 93

B. Less than

Answer 94

C. Equal to

Answer 95

D. Unpredictable; depends on the bubble size

The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.

Correct Answer :

Show all Chemical Engineering Basics MCQ

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The fugacity of liquid water at 298 K is approximately 3171 P_a. Considering the ideal heat of vaporisation as 43723 J/gm.mole, its fugacity at 300 K would be

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At the point of boundary layer separation in fluid flow, the

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Also checkout

The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm.mole, its fugacity at 300 K would be

Laser welding is widely employed in the __________ industries.

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Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of

Out of the following, which will fracture most readity, when hit with a hard hammer?

Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress.

A jig is used while __________ a hole.

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

Out of the following, the most malleable material is

In case of water (Prandtl number ≈ 6) flowing over a flat plate heated over the entire length, the thermal boundary layer thickness as compared to hydrodynamic boundary layer thickness is

At the point of boundary layer separation in fluid flow, the

Which of the following can be manufactured using powder metallurgy techniques?

__________ fluid force is not considered in the Navier-Stokes equation.

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Which of the following is not the function of a volute casing provided in a centrifugal pump?

For a first order chemical reaction, the concentration of the reactant decreases __________ with time.

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

The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________ at room temperature.

Air intake for an air compressor should be preferably taken from

Property responsible for the talcum powder to cling to the skin is the

Hydro-cyclone is a

Thermodynamic cycle involved in the working of a thermal power plant is the __________ cycle.

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