A. 1/4
B. 2/3
C. 3/4
D. 4/3
✅ The correct answer is option C.
Applied Mechanics and Graphic Statics MCQs
62. A block in the shape of a parallelopiped of sides lm x 2m x 3m lies on the surface. Which of the faces gives maximum stable block ?
A. 1 m x 2 m
B. 2 m x 3 m
C. 1 m x 3m
D. equally stable on all faces
✅ The correct answer is option B.
63. If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is_____________________?
A. —rad/sec 10
B. —rad/sec 20
C. —rad/sec 30
D. none of the above
✅ The correct answer is option C.
64. For a given velocity of a projectile, the range is maximum when the angle of projection is___________________?
A. 30°
B. 45°
C. 90°
D. 0°
✅ The correct answer is option B.
65. In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics ?
A. howe truss
B. king post truss
C. fink truss
D. warren truss
✅ The correct answer is option C.
66. A simple pendulum of length / has an energy E, when its amplitude is A. If the length of pendulum is doubled, the energy will be___________________?
A. E
B. E/2
C. 2E
D. 4E
✅ The correct answer is option B.
67. For a non-concurrent force system to be in equilibrium__________________?
A. only the closure of force polygon is sufficient
B. only the closure of funicular polygon is sufficient
C. both force polygon and funicular polygon must close
D. none of the above
✅ The correct answer is option C.
68. Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis ?
A. disc with larger density
B. disc with smaller density
C. both discs will have same rotational inertia
D. none of the above
✅ The correct answer is option B.
69. A cable loaded with 10 kN/m of span is stretched between supports in the same horizontal line 100 m apart. If the central dip is 10 m, then the maximum and minimum pull in the cable respectively are____________________?
A. 1346.3 kN and 1500 kN
B. 1436.2 kN and 1250 kN
C. 1346.3 kN and 1250 kN
D. 1436.2 kN and 1500 kN
✅ The correct answer is option C.
70. If A is the amplitude of particle executing simple harmonic motion, then the total energy E of the particle is___________________?
A. proportional to A
B. proportional to A2
C. proportional to 1/A2
D. independent of A
✅ The correct answer is option B.