Which of the following stresses is used for identifying the quality of structural steel?
Ultimate stress
Yield stress
Proof stress
None of the above
Correct Answer :
B. Yield stress
Related Questions
Pick up the correct statement from the following:
In basic Bessemer process, the steel heats the converter
In open-hearth process, the furnace heats the steel
In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore
All the above
The most important tool in brick laying for lifting and spreading mortar and for forming joints is
Trowel
Square
Bolster
Scutch
In brick masonry the bond produced by laying alternate headers and stretchers in each course is known as
English bond
Double Flemish bond
Zigzag bond
Single Flemish bond
The main ingredients of Portland cement are
Lime and silica
Lime and alumina
Silica and alumina
Lime and iron
Jhumb bricks are
Under burnt
Over burnt
Kutcha
None of these
For obtaining vinyl chloride acetate, the method used, is
Addition polymerization
Condensation polymerization
Co-polymerization
None of these
Priming consists of
One part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil
8 parts of white lead, one part of chalk and four parts of twice boiled linseed oil
One part of white lead, 8 parts of chalk and one part of linseed oil
None to these
Quick lime is (i) Slow in setting (ii) Rapid in slacking (iii) Good in strength The correct answer is
Only (i)
Only (ii)
Both (i) and (ii)
Both (ii) and (iii)
Bulking of sand is caused due to
Surface moisture
Air voids
Viscosity
Clay contents
Permanent magnets are made of high carbon steel and
15% of cobalt
20% of cobalt
35% of cobalt
45% of cobalt
To give a brilliant finish, the type of varnish used, is
Water varnish
Spirit varnish
Turpentine varnish
Oil varnish
In order of increasing percentage of silica, the correct sequence is
Sandy clay, calcareous clay, pure clay
Calcareous clay, pure clay, sandy clay
Pure clay, sandy clay, calcareous clay
None of these
Varnish is a transparent or semi-transparent solution of resinous substances in
Alcohol
Linseed
Turpentine
All the above
Expansion Joints in masonry walls are provided in wall lengths usater than
10 m
20 m
30 m
40 m
The cracks which extend from bark towards the sap wood in the cross section of a tree, are called
Radial shakes
Star shakes
Heart shakes
Cup shakes
Wrought iron contains carbon about
1.5% to 5.5%
0.5% to 1.75%
0.1% to 0.25%
None to these
Bitumen felt
Is used as water proofing material
Is used as damp proofing material
Is made from bitumen and hessian fibres
All the above
The slenderness ratio for masonry walls should not be more than
10
20
30
40
The kiln which may work throughout the year, is
Clamp
Bull's kiln
Hoffman's kiln
None of these
Pick up the correct statement from the following:
The plywoods do not split or crack due to changes in atmosphere
The commercial plywoods are available upto 150 cm wide and upto 300 cm long
The plywoods possess uniform tensile strength in all directions
All the above
Turpentine oil is used in paints as
Thinner
Vehicle
Base
Drier
Based on its dry weight, a freshly felled tree may contain water
25 %
50 %
75 %
100 %
A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than
10 %
15 %
20 %
25 %
The stones obtained by blasting are used as
Ballast in railways
Aggregates for concrete
Road metal
All the above
The size of modular bricks, is
10 × 10 × 9 cm
19 × 9 × 9 cm
22.5 × 10 × 8.5 cm
22.5 × 8.0 × 9 cm
Teak wood is suitable for
Sports articles
Furnitures
Railway sleepers
All the above
When a brick is immersed in water for 24 hours and then dried, if
No grey or white deposits appear on the surface, the brick is free from soluble salts
10 percent surface is covered with grey or white deposits, the brick has slight efflorescence
50 percent surface is covered with grey or white deposits, the brick has serious efflorescence
All the above
A good brick earth should contain:
About 20% to 30% of alumina
About 50% to 60% of silica
Not more than 5% of lime
All the above
Pick up the correct statement from the following:
Melamine is obtained from calcium carbide
Formaldehyde is prepared synthetically from methane
The melamine when reacted with formaldehyde forms the melamineformaldehyde resin
All the above
Polymerization helps to improve the property of
Strength
Rigidity
Elasticity
All of these