The unit of gc is

Question

The unit of gc is

A. lb_m/lb_f. ft/sec²

B. lb_f/lb_m. ft/sec²

C. ft/sec²

D. lb_m/lb_f. sec²/ft

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__________ has the highest melting point out of the following.

A. Tungsten

B. Zirconium

C. Molybdenum

D. Tantalum

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Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans?

A. Emissivity of pipe surface

B. Diameter & length of the pipe

C. Temperature of hot pipe surface & that of air in the room

D. None of these

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The two elements required to form substitutional solid solution should not have

A. Same crystalline structure

B. Same valency

C. Widely differing electronegativity

D. Same atomic sizes

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__________ has a negative co-efficient of linear expansion.

A. Iron

B. Copper

C. Rubber

D. Nickel

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__________ test can be termed as the semidestructive test.

A. Impact

B. Torsion

C. Hardness

D. Charpy

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A reduction in thermal resistance during heat transfer does not occur in the

A. Convection heat transfer by stirring the fluid and cleaning the heating surface

B. Conduction heat transfer by reduction in the material thickness and increase in the thermal conductivity

C. Radiation heat transfer by increasing the temperature and reducing the emissivity

D. None of these

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The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

A. 60 - 100

B. 400 - 700

C. 1200 -1500

D. 2000 - 2300

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The elastic strain in copper is due to the

A. Motion of dislocations

B. Stretching of atomic bonds

C. Breakage of atomic bonds

D. None of the above

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The difference between gross & net calorific values of fuel is due to the

A. Sensible heat carried away by the flue gases

B. Heat carried away by the steam from the moisture content of the fuel

C. Heat lost by radiation

D. Heat carried away by steam from the combustion of hydrogen in the fuel

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Dielectric

A. Is an electrical insulating material

B. Of low resistivity is preferred

C. Should have high thermal conductivity

D. Need not defy the corrosive action of chemicals

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Vibration upto 100 kilo hertz can be most accurately measured by a __________ type accelerometer.

A. Preloaded spring

B. Piezoelectric

C. Bonded strain gauge

D. None of these

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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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Magnetic permeability of iron is increased by its

A. Decarburising

B. Alloying with cobalt

C. Purification

D. Alternate heating & cooling

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Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.

A. 15

B. 25

C. 10

D. 30

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Austempering of steel requires it to be heated to 875°C followed by sudden cooling to 250-525°C, thereby changing austenite to

A. Sorbite

B. Bainite

C. Martensite

D. Troostite

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Increasing the carbon content of steel

A. Reduces the upper shelf energy

B. Increasing the ductility transition temperature

C. Decreases brittleness

D. Decreases hardness

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Brittleness induced due to the presence of sulphur in steel can be reduced by adding

A. Manganese

B. Magnesium

C. Vanadium

D. Copper

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Which of the following is not a dielectric material?

A. Cotton, silk and paper

B. Asbestos, glass, porcelain and mica

C. Rubber and polymeric resins

D. All refractory materials

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Austempering process results in the formation of __________ structure.

A. Martensitic

B. Bainitic

C. Carburised

D. Stressed

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In an amorphous material, atoms defy any definite atomic structure and exist in random pattern just like in liquid. Which of the following is an amorphous material?

A. Tin

B. Lead

C. Zinc

D. Glass

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Increasing sulphur content in pig iron tends to make it

A. Soft

B. Hard

C. Tough

D. Ductile & malleable

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The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.

A. Silicon

B. Carbon

C. Phosphorous

D. Chromium

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

A. More

B. Less

C. Same

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

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A psychrometer does not measure the __________ temperature of moist air.

A. Dew point

B. Dry bulb

C. Wet bulb

D. None of these

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Evaporative cooling process employs a combination of cooling and humidification in which the

A. Sensible heat is added

B. Sensible heat is removed and the latent heat is added

C. Latent heat is removed

D. Sensible heat is added and latent heat is removed

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Dephosphorization of molten pig iron is favoured by

A. Oxidising and basic slag

B. Reducing and basic slag

C. High activity co-efficient of phosphorous in metal

D. Oxidising and neutral slag

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Brazing filler metal used for joining steel plates

A. Melts below the melting points of base metals

B. Melts below 300°C

C. Is copper phosphorous alloy

D. Is copper

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Joule-Thomson co-efficient is the ratio of

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

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

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

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

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Cast iron contains __________ percent carbon.

A. 2.5

B. 3.75

C. 4.75

D. 5.25

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The order of a chemical reaction

A. Can be determined only experimentally

B. Can be determined from the stoichiometry of the reaction

C. Cannot be zero

D. Can be fractional

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Accepted Answer

A. lb_m/lb_f. ft/sec²

The unit of gc is

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

__________ has the highest melting point out of the following.

Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans?

The two elements required to form substitutional solid solution should not have

__________ has a negative co-efficient of linear expansion.

__________ test can be termed as the semidestructive test.

A reduction in thermal resistance during heat transfer does not occur in the

The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

The elastic strain in copper is due to the

The difference between gross & net calorific values of fuel is due to the

Dielectric

Vibration upto 100 kilo hertz can be most accurately measured by a __________ type accelerometer.

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

Magnetic permeability of iron is increased by its

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.

Austempering of steel requires it to be heated to 875°C followed by sudden cooling to 250-525°C, thereby changing austenite to

Increasing the carbon content of steel

Brittleness induced due to the presence of sulphur in steel can be reduced by adding

Which of the following is not a dielectric material?

Austempering process results in the formation of __________ structure.

In an amorphous material, atoms defy any definite atomic structure and exist in random pattern just like in liquid. Which of the following is an amorphous material?

Increasing sulphur content in pig iron tends to make it

The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.

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

A psychrometer does not measure the __________ temperature of moist air.

Evaporative cooling process employs a combination of cooling and humidification in which the

Dephosphorization of molten pig iron is favoured by

Brazing filler metal used for joining steel plates

Joule-Thomson co-efficient is the ratio of

Cast iron contains __________ percent carbon.

The order of a chemical reaction

Also checkout

The unit of gc is

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

__________ has the highest melting point out of the following.

Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans?

The two elements required to form substitutional solid solution should not have

__________ has a negative co-efficient of linear expansion.

__________ test can be termed as the semidestructive test.

A reduction in thermal resistance during heat transfer does not occur in the

The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

The elastic strain in copper is due to the

The difference between gross & net calorific values of fuel is due to the

Dielectric

Vibration upto 100 kilo hertz can be most accurately measured by a __________ type accelerometer.

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

Magnetic permeability of iron is increased by its

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is __________ mm.

Austempering of steel requires it to be heated to 875°C followed by sudden cooling to 250-525°C, thereby changing austenite to

Increasing the carbon content of steel

Brittleness induced due to the presence of sulphur in steel can be reduced by adding

Which of the following is not a dielectric material?

Austempering process results in the formation of __________ structure.

In an amorphous material, atoms defy any definite atomic structure and exist in random pattern just like in liquid. Which of the following is an amorphous material?

Increasing sulphur content in pig iron tends to make it

The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.

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

A psychrometer does not measure the __________ temperature of moist air.

Evaporative cooling process employs a combination of cooling and humidification in which the

Dephosphorization of molten pig iron is favoured by

Brazing filler metal used for joining steel plates

Joule-Thomson co-efficient is the ratio of

Cast iron contains __________ percent carbon.

The order of a chemical reaction

Also checkout

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m² .k), when the insulation thickness is __________ mm.