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1. When a body of mass moment of inertia I (about a given axis) is rotated about that axis with an angular velocity to, then the kinetic energy of rotation is
A. Iω
B. Iω2
C. 0.5Iω
D. 0.5Iω2
2. The force applied on a body of mass 100 kg to produce an acceleration of 5 m/s2, is
A. 20N
B. 100N
C. 500N
D. none of these
3. The motion of the body from one extremity to the other is known as a beat.
A. Agree
B. Disagree
4. The center of gravity of a rectangle lies at a point where its two diagonals meet each other.
A. Agree
B. Disagree
5. A framed structure is perfect, if the number of members are __________ (2j – 3), where j is the number of joints.
A. equal to
B. less than
C. greater than
D. either (b) or (c)
6. Moment of inertia of a hollow rectangular section as shown in the below figure about X–X axis, is
7. Two equal and opposite parallel forces whose lines of action are different can be replaced by a single force parallel to the given forces.
A. Correct
B. Incorrect
8. All the steel trusses of the bridges, have one of their end roller supported, and other end hinged. The main advantage of such a support is that the truss remains stable.
A. True
B. False
9. The time of flight of a projectile on the downward inclined plane depends upon
A. angle of projection
B. angle of inclination of the plane
C. both (a) and (b)
D. none of these
10. The force induced in the string BC due to the load W as shown in the below figure is
A. W sin θ
B. W cos θ
C. W tan θ
D. W cot θ
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