Related Questions

The yield point in fatigue loading compared to that in static loading is less. The ratio of ultimate tensile strength to endurance limit of a material subjected to fatigue loading is
A 0.5
B 1
C 1.5
D 2
Modulus of resilience is defined as Resilience _____
A at ultimate stress
B per unit volume
C at proportional limit
D at elastic limit
Resilience of a material is considered when it is subjected to
A Frequent heat treatment
B Fatigue
C Creep
D Shock loading
When a bolt is subjected to an external load, the stress induced in the bolt will be
A Tensile stress
B Shear stress
C Combined tensile and shear stress
D Any one of these
Resilience of a bolt can be increased by increasing its
A Length
B Shank diameter
C Head diameter
D None of these
A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where $$\sigma $$ = Stress for a plate with no hole i.e. nominal stress)
A $$\sigma \left( {1 + \frac{{\text{b}}}{{2{\text{a}}}}} \right)$$
B $$\sigma \left( {1 + \frac{{2{\text{a}}}}{{\text{b}}}} \right)$$
C $$\sigma \left( {1 + \frac{{\text{b}}}{{3{\text{a}}}}} \right)$$
D $$\sigma \left( {1 + \frac{{3{\text{a}}}}{{\text{b}}}} \right)$$
Resilience of a material is important, when it is subjected to
A Combined loading
B Fatigue
C Thermal stresses
D Shock loading
The shock absorbing capacity of a bolt can be increased by
A Tightening it properly
B Increasing shank diameter
C Grinding the shank
D Making shank diameter equal to core diameter of thread
When a bolt and nut is made of mild steel, then the effective height of nut is made equal to (where d = Nominal diameter of bolt)
A 0.5 d
B 0.75 d
C d
D 1.25 d
If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation
A 124 d
B 138 d
C 151 d
D 168 d

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