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4

The unit of gc is

A. lbm/lbf. ft/sec2

B. lbf/lbm. ft/sec2

C. ft/sec2

D. lbm/lbf. sec2/ft

Correct Answer :

A. lbm/lbf. ft/sec2


Related Questions

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4

Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying oils?

A. Elaiden test

B. Reichert-Meissl value test

C. Hunter value test

D. Iodine value test

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4

With increase in annealing temperature, the following defect density decreases.

A. Vacancy

B. Dislocation

C. Grain boundary

D. All of these

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4

Dew point temperature always gives an indication of the __________ of the moist air.

A. Dryness

B. Moisture content

C. Coolness

D. Latent heat

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4

Thermistors are used in __________ devices.

A. Voltage measuring

B. Temperature measuring

C. Temperature compensating

D. Both (B) & (C)

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4

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

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4

Which one is neutral in character?

A. N2O4

B. N2O

C. N2O5

D. N2O3

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4

Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.

A. Cementite

B. Austenite

C. Martensite

D. Pearlite

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4

Case hardening of a material is

A. Followed by tempering or carburising

B. Preceded by its tempering

C. Done to get a soft ductile interior with a very hard surface

D. Carried out to get extreme hardness in its core

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4

Silicon in steel

A. Makes it usable in almost all magnetic circuits where alternating current is used

B. Increases its electrical resistivity and decreases the hysteresis loss

C. Is present upto 5% & 4% respectively when used in transformers & motor armatures

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

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4

__________ of hard alloy and tool steel is done to make it easily machinable.

A. Case carburising

B. Tempering

C. Normalising

D. Annealing

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4

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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4

Which of the following gases cause global warming?

A. Carbon monoxide

B. Carbon dioxide

C. Nitrogen

D. Ozone

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4

Quartz is a __________ material.

A. Diamagnetic

B. Ferromagnetic

C. Ferroelectric

D. Piezoelectric

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4

Out of the following, the joint produced by __________ has the lowest strength.

A. Soldering

B. Welding

C. Brazing

D. Riveting

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4

Energy to be supplied to the radioactive nucleus for the emission of a neutron is __________ MeV.

A. 0.8

B. 7.8

C. 200

D. 10000

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4

For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be

A. 100% indirect reduction

B. 100% direct reduction

C. 50-60% indirect reduction

D. 30-40% indirect reduction

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4

Which of the following is not a charge material for cupola?

A. Limestone

B. Iron scrap

C. Iron ore

D. Pig iron

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4

Which of the following is a commonly used manometric liquid for low pressure range?

A. Ethyl alcohol

B. Carbon tetrachloride

C. Glycerol

D. Ethylene glycol

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4

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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4

__________ wire is never used for making the heating element.

A. Nichrome

B. Kanthal

C. Invar

D. None of these

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4

Internal energy of a gas obeying Van-Der- Waals equation of state, [p + (a/v2)] (V - b) = RT, depends upon its

A. Pressure & temperature

B. Pressure & specific volume

C. Temperature & specific volume

D. Temperature only

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4

__________ 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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4

In connection with corrosion of metals, passivation is the process that

A. Intensifies deterioration

B. Changes the composition of the metal

C. Inhibits further deterioration

D. None of these

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4

A common disinfectant used in village wells for disinfection of water is

A. Free chlorine

B. Bromine

C. Iodine

D. Potassium permanganate

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4

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

A. Malleable

B. Nodular

C. Ductile

D. Grey

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4

What happens, when SO2 is passed through a solution of H2S in water?

A. Precipitation of sulphur takes place

B. H2SO3 is formed

C. Oleum is formed

D. None of these

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4

Austempering process results in the formation of __________ structure.

A. Martensitic

B. Bainitic

C. Carburised

D. Stressed

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4

Which of the following hardness tests does not measure the indentation hardness of metals and alloys?

A. Vickers hardness test

B. Shore scleroscope test

C. Brinell hardness test

D. Rockwell hardness test

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4

Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be

A. 9.5 : 1

B. 12.5 : 1

C. 15.5 : 1

D. 18.5 : 1

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4

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