Theory of Structures A close coil helical spring of mean diameter D consists of n coils of diameter d. If it carries an axial load W, the energy stored in the spring, is 4W²D3n²/d4N 4WD²n/d4N 4W²Dn/d4N 4W²D3n/d4N 4W²D3n²/d4N 4WD²n/d4N 4W²Dn/d4N 4W²D3n/d4N ANSWER DOWNLOAD EXAMIANS APP
Theory of Structures A cantilever of length ‘L’ is subjected to a bending moment ‘M’ at its free end. If EI is the flexural rigidity of the section, the deflection of the free end, is ML/2EI ML²/2EI ML²/3EI ML/EI ML/2EI ML²/2EI ML²/3EI ML/EI ANSWER DOWNLOAD EXAMIANS APP
Theory of Structures A steel rod of sectional area 250 sq. mm connects two parallel walls 5 m apart. The nuts at the ends were tightened when the rod was heated to 100°C. If steel = 0.000012/C°, Esteel = 0.2 MN/mm², the tensile force developed at a temperature of 50°C, is 100 N/mm 2 80 N/mm² 120 N/mm² 150 N/mm² 100 N/mm 2 80 N/mm² 120 N/mm² 150 N/mm² ANSWER DOWNLOAD EXAMIANS APP
Theory of Structures The equivalent length is of a column of length having both the ends fixed, is 2 L L L/2 l 2 L L L/2 l ANSWER DOWNLOAD EXAMIANS APP
Theory of Structures If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following: Q = F – S Q = S – F Q = S × F Q = S + F Q = F – S Q = S – F Q = S × F Q = S + F ANSWER DOWNLOAD EXAMIANS APP
Theory of Structures Maximum shear stress theory for the failure of a material at the elastic limit, is known Haig's theory St. Venant's theory Rankine's theory Guest's or Trecas' theory Haig's theory St. Venant's theory Rankine's theory Guest's or Trecas' theory ANSWER DOWNLOAD EXAMIANS APP
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