Increase in the entropy of a system represents the

Question

Increase in the entropy of a system represents the

A. Degradation of energy

B. Decrease in system pressure

C. Increase in the availability of energy

D. Increase in the temperature

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In case of a, centrifugal pump, the ratio h₁/h₂ is termed as the __________ efficiency (where, h₁ = actual measured head & h₂ = head imparted to the fluid by impeller).

A. Mechanical

B. Overall

C. Volumetric

D. Impeller

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Consumable electrodes are used in the __________ welding.

A. Gas

B. Arc

C. Thermit

D. Resistance

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Minimum thermal efficiency of a steam boiler may be around __________ percent

A. 25

B. 45

C. 65

D. 20

Discuss this answer

The trace metal present in insulin is

A. Cu

B. Zn

C. Fe

D. Ni

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Fahrenheit and Centigrade scales have the same readings at

A. -55°

B. -40°

C. -33°

D. -58°

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Consideration of the creep is the most important in case of the

A. Blades of gas turbine

B. Piston of an I. C. engine

C. Flywheel of steam engine

D. Cycle chain

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Use of water as a manometric liquid suffers from the disadvantage of its

A. Low vapour pressure

B. Corrosive nature

C. High vapour pressure

D. High boiling point

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A material being tested for endurance strength is subjected to the __________ load.

A. Impact

B. Completely reversed

C. Dynamic

D. Static & dynamic

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Ammonia gas can be dried by

A. PCl₅

B. Quick lime

C. CaCl₂

D. Concentrated H₂SO₄

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Load cells used for the measurement of weight has

A. Compact & rugged construction with an accuracy of 0.1 to 1%

B. No moving parts and incurs negligible deflection under load

C. Provision of thermal compensation and is hermetically sealed

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

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Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of

A. 90% tungsten carbide and 10% cobalt

B. 70% aluminium oxide & 30% silica

C. 30% nickel, 15% chromium & 55% tungsten

D. 65% tungsten & 35% zirconium

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Drills are usually made of

A. Cermets

B. High speed steel

C. Alloy steel

D. Tungsten carbide

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__________ of austenite decreases the hardenability in steel.

A. Fine grains

B. Coarse grains

C. Homogeneity

D. Dissolved elements (except cobalt)

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Exposure to __________ accelerates the degradation of plastics.

A. Ultraviolet radiation

B. High atmospheric temperature

C. High ambient temperature

D. Damp atmosphere

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Pick out the wrong statement.

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

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

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

D. Tungsten steel and alnico are not hard magnetic materials

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Corona discharge is related to the operation of a/an

A. Induction motor

B. Electrostatic precipitator

C. Fast breeder reactor

D. Magneto hydrodynamic generator (MHD)

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

A. Brass

B. Aluminium

C. Copper

D. Lead

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The excess air required for the combustion of pulverised coal is of the order of about __________ percent.

A. 5

B. 15

C. 30

D. 45

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Limestone is added in the blast furnace (during pig iron manufacture) to

A. Form slag by combining with impurities

B. Supply heat by undergoing exothermic reaction with impurities

C. Reduce the coke consumption

D. Reduce slag viscosity

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Galvanic corrosion cannot be prevented by

A. Cathodic protection

B. Anodic protection

C. Usage of largest possible anodic area

D. Any one of these

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Nitriding of a steel part does not increase its

A. Grain size

B. Fatigue limit

C. Surface hardness

D. Wear resistance

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Shrinkage allowance on pattern is provided to compensate for shrinkage when the

A. Metal changes from liquid state to solid state at freezing temperature

B. Solid phase temperature drops from freezing temperature to the room temperature

C. Liquid metal temperature drops from pouring temperature to room temperature

D. Liquid metal temperature drops from pouring temperature to freezing temperature

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__________ is used as a material of construction for the blade of power saw.

A. Wrought iron

B. Stainless steel

C. Mild steel

D. High speed steel

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Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water)?

A. Aluminium

B. Copper

C. Titanium

D. Stainless steel

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The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is

A. Magnesite

B. Chrome

C. Silica

D. Fireclay

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Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type

A. Parallel flow with equal heat capacities

B. Counter flow with equal heat capacities

C. Counter flow with unequal heat capacities

D. Parallel flow with unequal heat capacities

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

A. Outside

B. Inside

C. Mean

D. None of these

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Specific __________ is a dimensionless quantity.

A. Heat

B. Humidity

C. Weight

D. None of these

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According to thermodynamic Fahrenheit scale, the fundamental interval between ice point to steam point is

A. 180°

B. 212°

C. 32°

D. 273°

Discuss this answer

__________ iron is produced by the annealing of white cast iron.

A. Malleable

B. Nodular

C. Ductile

D. Grey

Discuss this answer

Accepted Answer

A. Degradation of energy

Increase in the entropy of a system represents the

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

In case of a, centrifugal pump, the ratio h₁/h₂ is termed as the __________ efficiency (where, h₁ = actual measured head & h₂ = head imparted to the fluid by impeller).

Consumable electrodes are used in the __________ welding.

Minimum thermal efficiency of a steam boiler may be around __________ percent

The trace metal present in insulin is

Fahrenheit and Centigrade scales have the same readings at

Consideration of the creep is the most important in case of the

Use of water as a manometric liquid suffers from the disadvantage of its

A material being tested for endurance strength is subjected to the __________ load.

Ammonia gas can be dried by

Load cells used for the measurement of weight has

Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of

Drills are usually made of

__________ of austenite decreases the hardenability in steel.

Exposure to __________ accelerates the degradation of plastics.

Pick out the wrong statement.

Corona discharge is related to the operation of a/an

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

The excess air required for the combustion of pulverised coal is of the order of about __________ percent.

Limestone is added in the blast furnace (during pig iron manufacture) to

Galvanic corrosion cannot be prevented by

Nitriding of a steel part does not increase its

Shrinkage allowance on pattern is provided to compensate for shrinkage when the

__________ is used as a material of construction for the blade of power saw.

Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water)?

The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is

Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type

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

Specific __________ is a dimensionless quantity.

According to thermodynamic Fahrenheit scale, the fundamental interval between ice point to steam point is

__________ iron is produced by the annealing of white cast iron.

Also checkout

Increase in the entropy of a system represents the

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 = actual measured head & h2 = head imparted to the fluid by impeller).

Consumable electrodes are used in the __________ welding.

Minimum thermal efficiency of a steam boiler may be around __________ percent

The trace metal present in insulin is

Fahrenheit and Centigrade scales have the same readings at

Consideration of the creep is the most important in case of the

Use of water as a manometric liquid suffers from the disadvantage of its

A material being tested for endurance strength is subjected to the __________ load.

Ammonia gas can be dried by

Load cells used for the measurement of weight has

Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of

Drills are usually made of

__________ of austenite decreases the hardenability in steel.

Exposure to __________ accelerates the degradation of plastics.

Pick out the wrong statement.

Corona discharge is related to the operation of a/an

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

The excess air required for the combustion of pulverised coal is of the order of about __________ percent.

Limestone is added in the blast furnace (during pig iron manufacture) to

Galvanic corrosion cannot be prevented by

Nitriding of a steel part does not increase its

Shrinkage allowance on pattern is provided to compensate for shrinkage when the

__________ is used as a material of construction for the blade of power saw.

Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water)?

The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is

Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed in case of heat exchanger of the type

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

Specific __________ is a dimensionless quantity.

According to thermodynamic Fahrenheit scale, the fundamental interval between ice point to steam point is

__________ iron is produced by the annealing of white cast iron.

Also checkout

In case of a, centrifugal pump, the ratio h₁/h₂ is termed as the __________ efficiency (where, h₁ = actual measured head & h₂ = head imparted to the fluid by impeller).