81. For a determinate pin-jointed plane frame, the relation between the number of joints j and members m is given by
a) m = 2j - 3
b) m = 3j-6
c) m > 2j - 3
d) m > 3j - 6
Ans: a
82. The basic perfect frame is a
a) triangle
b) rectangle
c) square
d) hexagon
Ans: a
83. Method of joints is applicable only when the number of unknown forces at the joint under consideration is not more than
a) one
b) two
c) three
d) four
Ans: b
84. A short column of external diameter of 250 mm and internal diameter of 150 mm carries an eccentric load of 1000 kN. The greatest eccentricity which the load can have without producing tension anywhere is
a) 20 mm
b) 31.25 mm
c) 37.5 mm
d) 42.5 mm
Ans: d
85. Proof resilience is the maximum energy stored at
a) limit of proportionality
b) elastic limit
c) plastic limit
d) none of the above
Ans: b
86. Strain energy stored in a member is given by
a) 0.5 x stress x volume
b) 0.5 x strain x volume
c) 0.5 x stress x strain x volume
d) 0.5 x stress x strain
Ans: c
87. A rectangular block of size 200 mm x 100 mm x 50 mm is subjected to a shear stress of 100 N/mm2. If modulus of rigidity of material is 1 x 105 N/mm2, strain energy stored will be
a) 10 N.m
b) 25 N.m
c) 50 N.m
d) 100N.m
Ans: c
88. A steel rod of cross sectional area equal to 1000 mm2 is 5 m long. If a pull of 100 kN is suddenly applied to it, then the maximum stress intensity will be
a) 50 N/mm2
b) 100 N/mm2
c) 200 N/mm2
d) 400 N/mm2
Ans: c
89. If the depth of a beam of rectangular section is reduced to half, strain energy stored in the beam becomes
a) 1/4 time
b) 1/8 time
c) 4 times
d) 8 times
Ans: d
90. The specimen in a Charpy impact test is supported as a
a) cantilever beam
b) simply supported beam
c) fixed beam
d) continuous beam
Ans: b
a) m = 2j - 3
b) m = 3j-6
c) m > 2j - 3
d) m > 3j - 6
Ans: a
82. The basic perfect frame is a
a) triangle
b) rectangle
c) square
d) hexagon
Ans: a
83. Method of joints is applicable only when the number of unknown forces at the joint under consideration is not more than
a) one
b) two
c) three
d) four
Ans: b
84. A short column of external diameter of 250 mm and internal diameter of 150 mm carries an eccentric load of 1000 kN. The greatest eccentricity which the load can have without producing tension anywhere is
a) 20 mm
b) 31.25 mm
c) 37.5 mm
d) 42.5 mm
Ans: d
85. Proof resilience is the maximum energy stored at
a) limit of proportionality
b) elastic limit
c) plastic limit
d) none of the above
Ans: b
86. Strain energy stored in a member is given by
a) 0.5 x stress x volume
b) 0.5 x strain x volume
c) 0.5 x stress x strain x volume
d) 0.5 x stress x strain
Ans: c
87. A rectangular block of size 200 mm x 100 mm x 50 mm is subjected to a shear stress of 100 N/mm2. If modulus of rigidity of material is 1 x 105 N/mm2, strain energy stored will be
a) 10 N.m
b) 25 N.m
c) 50 N.m
d) 100N.m
Ans: c
88. A steel rod of cross sectional area equal to 1000 mm2 is 5 m long. If a pull of 100 kN is suddenly applied to it, then the maximum stress intensity will be
a) 50 N/mm2
b) 100 N/mm2
c) 200 N/mm2
d) 400 N/mm2
Ans: c
89. If the depth of a beam of rectangular section is reduced to half, strain energy stored in the beam becomes
a) 1/4 time
b) 1/8 time
c) 4 times
d) 8 times
Ans: d
90. The specimen in a Charpy impact test is supported as a
a) cantilever beam
b) simply supported beam
c) fixed beam
d) continuous beam
Ans: b
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