Related Questions

When a bar is subjected to a change of temperature and its deformation is prevented, the stress induced in the bar is
A Tensile stress
B Compressive stress
C Shear stress
D Thermal stress
The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the __________ stress.
A Working
B Damaging
C Allowable
D None of these
In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by
A 10%
B 20%
C 30%
D 40%
The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be
A Same in both cases
B 2 times more
C 3 times more
D 4 times more
A shopkeeper gains 17% after allowing a discount of 10% on the marked price of an article. Find his profit percent if the article is sold at marked price allowing no discount.
A 30%`
B 37%
C 23%
D 27%
A shopkeeper gains 17% after allowing a discount of 10% on the marked price of an article . Find his profit percent if the article is sold at marked price allowing no discount .
A 30%
B 37%
C 23%
D 27%
Permanent set in a material is produced by subjecting it to
A Triaxial loading
B Fatigue loading
C Stresses beyond the elastic limit
D Tensile & compressive loads simultaneously
The length of the lap in a compression member is kept greater than bar diameter x (Permissible stress in bar / Five times the bond stress) or
A 12 bar diameters
B 18 bar diameters
C 24 bar diameters
D 30 bar diameters
When a bar of length '$$l$$' and diameter 'd' is rigidly fixed at the upper end and hanging freely, then the total elongation produced in the bar due to its own weight is (where w = Weight per unit volume of the bar)
A $$\frac{{{\text{w}}l}}{{2{\text{E}}}}$$
B $$\frac{{{\text{w}}{l^2}}}{{2{\text{E}}}}$$
C $$\frac{{{\text{w}}{l^3}}}{{2{\text{E}}}}$$
D $$\frac{{{\text{w}}{l^4}}}{{2{\text{E}}}}$$
The thermal stress in a metallic bar does not depend upon the
A Changes in temperature
B Cross-sectional area
C Both A & B
D Neither A nor B

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