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Current Affairs January 2024

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4

While the bin cards are used in the effective stores management, the queuing theory is associated with the __________ time.

A. Waiting

B. Idle

C. Inspection

D. Tool replacement

Correct Answer :

A. Waiting


Related Questions

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4

Air intake for an air compressor should be preferably taken from

A. A site, where cooling towers are located nearby

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

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

D. An outside atmosphere at 10°C

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4

Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional area of the conductor)

A. A

B. l

C. A2

D. Both 'a' & 'b'

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4

The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.

A. Tension

B. Shear

C. Compression

D. Bending & tension

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4

The product (s) of roasting of a sulphide ore is (are)

A. Oxide only

B. Sulphate only

C. Oxide and sulphate

D. Dependent on temperature and partial pressure of oxygen & sulphur dioxide

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4

Identify the correct statement.

A. Sphlerite is zinc oxide

B. The first law of the thermodynamics is stated as δE = δQ - δW

C. Lead can be produced in a blast furnace

D. T. ferrooxidans is a fungus that can be used for leaching chalcopyrite

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4

The trace metal present in insulin is

A. Cu

B. Zn

C. Fe

D. Ni

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4

Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.

A. Atoms

B. Neutrons

C. Nucleons

D. Electrons

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4

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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4

The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material.

A. Elastic

B. Ultimate

C. Yielding

D. Breaking

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4

Dowtherm is a

A. High temperature heating medium (a petroleum product)

B. Product of coal tar distillation

C. Very heat sensitive material

D. None of these

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4

__________ has the highest melting point out of the following.

A. Tungsten

B. Zirconium

C. Molybdenum

D. Tantalum

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4

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

A. 3171Pa

B. 3567Pa

C. 1.01 × 105Pa

D. 5000Pa

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4

Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be

A. 5

B. 1.25

C. 2.5

D. 3.75

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4

Which of the, following is not associated with the functioning of a petrol engine?

A. Compression ignition system

B. Spark plug

C. Carburettor

D. Otto cycle

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4

All the atoms of the world comprise of electrons, proton & neutron except that of __________ atom in which neutron is absent.

A. Deuterium

B. Hydrogen

C. Neon

D. Helium

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4

A steam carrying pipeline is insulated with two layers of insulating materials with the inferior insulation material forming the inner part. If the two insulating layers are interchanged, the heat conducted will

A. Increase

B. Decrease

C. Remain unaffected

D. May increase or decrease; depends on the thickness of each layer

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4

Gas turbine normally employs a constant __________ cycle.

A. Pressure

B. Temperature

C. Volume

D. None of these

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4

Addition of __________ to steel does not help in improving its machinability.

A. Sulphur

B. Silicon

C. Lead

D. Phosphorous

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4

Which of the following is a boiler accessory
i.e., not a boiler mounting?

A. Blow off cock

B. Feed check valve

C. Feed water pump

D. Stop valve

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4

The same volume of all gases is representative of their

A. Specific gravities

B. Densities

C. Gas characteristic constants

D. Molecular weights

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4

Wrought iron does not have

A. Uniform strength in all directions

B. Ability to hold protective coating

C. High ductility & corrosion resistance

D. Easily weldable characteristics

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4

Thermit welding uses the following energy source.

A. Electrical energy

B. Chemical energy

C. Energy of high velocity electrons

D. Heat generated by friction

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4

Water flow in the river during flood can be categorised as the __________ flow.

A. Unsteady uniform

B. Unsteady non-uniform

C. Steady uniform

D. Steady non-uniform

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4

Super conduction in metals is observed at a temperature of __________ °K.

A. <100

B. >100

C. About 273

D. About 373

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4

What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m2. °K? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively.

A. 2

B. 8

C. 10

D. 40

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4

Dislocations are __________ defects.

A. Point

B. Line

C. Volume

D. None of these

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4

Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint.

A. Flanged iron

B. Collar

C. Flexible

D. Expansion

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4

The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm2.

A. 273.15

B. 225.65

C. 100.03

D. 373.15

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4

Compressed dry air is used as the cutting fluid, while machining

A. Steel

B. Cast iron

C. Aluminium

D. None of these

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4

In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be

A. ΔQ = 0, ΔS=0

B. ΔQ = 0, ΔS = +ve

C. ΔQ = 0, ΔS = -ve

D. ΔQ = +ve, ΔS= +ve