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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Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?

A. Enthalpy

B. Relative humidity

C. Wet bulb temperature

D. Dew point temperature

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__________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C.

A. Veneering

B. Galvanising

C. Electroplating

D. Calorising

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Oxide layer formed on the non-ferrous metal surface after its annealing is

A. Removed by acid pickling

B. Hammered into the surface

C. Removed with coarse emery cloth

D. Left as such to protect the surface

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Which of the following alloying elements is present in maximum percentage in high speed steel?

A. Molybdenum

B. Chromium

C. Tungsten

D. Vanadium

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Shaft/rotor speed is most accurately measured by a

A. Frequency counter

B. Tachometer

C. Strobometer

D. Speedometer

Discuss this answer

Fibre reinforced plastic (FRP) are

A. Made of glass fibre and thermoplastic resins

B. Anisotropic

C. Made of thermosetting resin and glass fibre

D. Both 'b' & 'c'

Discuss this answer

In the acid Bessemer process, the hot metal should have the following composition.

A. S < 0.05% and P < 0.05%

B. S < 0.05% and P < 1.5%

C. S < 0.05% and P > 1.5%

D. S > 1.5% and P < 0.05%

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A material subjected __________ must have high resilience.

A. Shock loading

B. Vibration

C. Fatigue

D. Tension

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Air standard Otto cycle is more efficient than the diesel cycle for the same

A. Heat addition & compression ratio

B. Heat addition & pressure

C. Compression ratio & pressure

D. Cylinder dimension & rpm

Discuss this answer

Alloys having more than 80% copper are generally more

A. Abrasion resistant

B. Corrosion resistant

C. Prone to season cracking

D. Machinable

Discuss this answer

Hydro-cyclone is a

A. Crusher

B. wet classifier

C. Dry classifier

D. Magnetic separator

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Age hardening is connected with

A. Babbitt metal

B. Gun metal

C. Stainless steel

D. Duralumin

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Which of the following metals reacts violently with water?

A. Mercury

B. Sodium

C. Calcium

D. Magnesium

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Most important property of steels for use in automobile bodies is the

A. Formability

B. Yield strength

C. Toughness

D. Resilience

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Which of the following is used to produce draught in the locomotive boilers?

A. Chimney

B. Induced draught fan

C. Forced draught fan

D. Steam jet arrangement

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One ton of refrigeration is not equivalent to the heat removal rate of

A. 200 BTU/minute

B. 50 kcal/minute

C. 50 kJ/sec

D. 3.5 KW

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Gantt charts are used for streamlining the

A. Inventory control

B. Production schedule

C. Sales forecasting

D. Quality control

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If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity

A. Is trebled

B. Remains unchanged

C. Decreases by a factor of 3

D. Decreases by a factor of 1/3

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When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the

A. Partial pressure of water vapour is less than the total pressure

B. Humidity is < 100% & dew point temperature of air has not reached

C. Dew point temperature of air has not reached & air is not saturated fully

D. Air is fully saturated

Discuss this answer

The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.

A. 0

B. 100

C. 50

D. None of these

Discuss this answer

__________ circuit is most commonly used to measure strain with the help of a strain gauge.

A. Ballast

B. Voltage balancing potentiometric

C. Simple current sensitive

D. None of these

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Which of the following forces does not act on a fluid at rest?

A. Viscous force

B. Gravity force

C. Hydrostatic force

D. Surface tension force

Discuss this answer

The lightest non-inflammable gas is

A. H2

B. He

C. Ar

D. O2

Discuss this answer

Wavelength of radiation emitted by a body depends on the __________ of its surface.

A. Temperature

B. Area

C. Nature

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

Discuss this answer

Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.

A. Creep

B. Fatigue

C. Endurance

D. Tensile

Discuss this answer

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

A. Greater than

B. Less than

C. Equal to

D. Unpredictable; depends on the bubble size

Discuss this answer

Yield strength of a material is determined by the __________ test.

A. Creep

B. Tension

C. Compression

D. Endurance

Discuss this answer

__________ is not a case hardening process.

A. Carburising

B. Nitriding

C. Cyaniding

D. Annealing

Discuss this answer

Tempering of a material does not improve its

A. Machinability

B. Toughness

C. Internal stress level

D. Softness

Discuss this answer

The property of material, by which a given amount of energy is absorbed by it, without plastic deformation, is called

A. Resilience

B. Toughness

C. Ductility

D. Impact strength

Discuss this answer

__________ metal is used as a bearing liner material.

A. Pewter

B. White

C. Babbitt

D. Gun

Discuss this answer

Accepted Answer

D. Dew point temperature

Moist air is cooled along the line of constant __________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs?

Correct Answer :

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Related Questions

__________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C.

Oxide layer formed on the non-ferrous metal surface after its annealing is

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Shaft/rotor speed is most accurately measured by a

Fibre reinforced plastic (FRP) are

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A material subjected __________ must have high resilience.

Air standard Otto cycle is more efficient than the diesel cycle for the same

Alloys having more than 80% copper are generally more

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Age hardening is connected with

Which of the following metals reacts violently with water?

Most important property of steels for use in automobile bodies is the

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One ton of refrigeration is not equivalent to the heat removal rate of

Gantt charts are used for streamlining the

If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity

When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the

The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.

__________ circuit is most commonly used to measure strain with the help of a strain gauge.

Which of the following forces does not act on a fluid at rest?

The lightest non-inflammable gas is

Wavelength of radiation emitted by a body depends on the __________ of its surface.

Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.

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Yield strength of a material is determined by the __________ test.

__________ is not a case hardening process.

Tempering of a material does not improve its

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