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Current Affairs January 2024

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4

Suitability of steel for its use in cable is judged by its strength in

A. Tension

B. Compression

C. Torsion

D. Shear

Correct Answer :

A. Tension


Related Questions

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4

Cold chisel & hammers are made of

A. High speed steel

B. High carbon steel

C. Forged steel

D. Mild steel

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4

In case of simple harmonic motion, displacement is proportional to the

A. Velocity

B. Acceleration

C. Both (A) & (B)

D. Neither (A) nor (B)

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4

The rolling process cannot be used to produce

A. Plates

B. Rods

C. Tubes

D. Wires

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4

M10 index of coke indicates its

A. Compressive strength

B. Hardness

C. Abrasion resistance

D. Impact strength

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4

Lap joints are preferred over butt joints in soldering/brazing, because these joints are

A. Weaker in tension but stronger in shear

B. Weaker in shear but stronger in tension

C. Stronger in both shear and tension

D. The lap joints are easily made

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4

Fire in fuel gas pipelines is extinguished most effectively by

A. Spraying water

B. Blanketting the area with nitrogen atmosphere

C. Fire fighting foam

D. None of these

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4

Solute atoms which cause yield point phenomenon in mild steel are/is

A. Aluminium

B. Boron

C. Carbon

D. Nitrogen

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4

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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4

The minimum and the maximum number of members required to form a Private Limited Joint Stock Company are respectively

A. 7 and 30

B. 10 and 50

C. 2 and 50

D. 13 and 55

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4

Two wires of the same radius & material having length in the ratio of 1 : 2 are stretched by the same force. The strain produced in the two wires will be in the ratio of

A. 1 : 1

B. 1 : 2

C. 2 : 1

D. 1 : 4

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4

Which of the following is not a characteristic observed in material failure by fatigue fracture?

A. Plastic deformation of material does not occur

B. Initiation of crack from below the surface does not occur

C. Initiation of crack occurs on the surface of the machine part

D. Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface

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4

Which of the following fastening devices has a head at one end and a nut fitted to the other?

A. Bolt

B. Stud

C. Top bolt

D. None of these

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4

Presence of nickel & chromium in steel does not raise its

A. Elastic limit

B. Machining properties

C. Ductility

D. Resilience

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4

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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4

Which of the following are considered applications of ultrasonic testing?

A. Determination of elastic constant

B. Detection of defects in metal

C. Measurement of material thickness

D. None of the above

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4

__________ remains constant during the adiabatic cooling of moist air.

A. Wet bulb temperature

B. Dry bulb temperature

C. Relative humidity

D. Specific humidity

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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 metals is not subjected to electrolytic refining/purification?

A. Copper

B. Zinc

C. Tin

D. Aluminium

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4

For the Stoke's law to be valid in the case of a falling sphere in a fluid, the

A. Reynolds number (based on sphere diameter) should be < 1

B. Flow around the sphere should be in turbulent region

C. Sphere must be metallic

D. Fluid density should be constant

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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

Steel & cast iron pipes are produced by __________ casting.

A. Slush

B. Die

C. Investment

D. True centrifugal

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4

__________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical.

A. Mach

B. Reynolds

C. Froude

D. Weber

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4

A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material?

A. Steel

B. Glass

C. Rubber

D. Brass

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4

In chemical dehumidification process

A. Wet bulb temperature increases

B. Dry bulb temperature remains constant

C. Dew point temperature increases

D. Dry bulb temperature increases

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4

Shampoos are commercially not available in the form of

A. Powder

B. Gaseous mixture

C. Solution

D. Emulsion

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4

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

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4

Regeneration of molecular sieve requires it to be heated to a temperature of about __________ °C.

A. 80-120

B. 200-300

C. 600-800

D. 1000-1100

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4

Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10-2 atm, the partial pressure of B is 10-3 atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is

A. 10 atm-1

B. 105 atm-1

C. 10 (dimensionless)

D. 105 (dimensionless)

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4

__________ pipe is the most suitable for carrying sanitary drainage.

A. Stainless steel

B. Reinforced cement concrete

C. Cast iron

D. Asbestos cement

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4

The dew point of moist air becomes __________ with decrease in its relative humidity.

A. Less than the wet bulb temperature

B. More than the wet bulb temperature

C. More than the dry bulb temperature

D. Equal to wet bulb temperature