1. The forces, whose lines of action are parallel to each other and act in the same directions, are known as ? coplaner concurrent forces coplaner non-concurrent forces like parallel forces unlike parallel forces Answer: like parallel forces Explanation: View Answer Discuss in Forum Report Question

 2. One joule means that ? work is done by a force of 1 N when it displaces a body through 1 m work is done by a force of 1 kg when it displaces a body through 1 m work is done by a force of 1 dyne when it displaces a body through 1 cm work is done by a force of 1 g when it displaces a body through 1 cm Answer: work is done by a force of 1 N when it displaces a body through 1 m Explanation: View Answer Discuss in Forum Report Question

 3. The angle of inclination of the plane at which the body begins to move down the plane, is called ? angle of friction angle of repose angle of projection none of these Answer: angle of friction Explanation: View Answer Discuss in Forum Report Question

 4. The length of a second's pendulum is ? 94.9 cm 99.4 cm 100 cm 101 cm Answer: 99.4 cm Explanation: View Answer Discuss in Forum Report Question

 5. A framed structure is imperfect, if the number of members are ........... (2j-3) where j is no of joints ? equal to less than greater than either (b) or (c) Answer: either (b) or (c) Explanation: View Answer Discuss in Forum Report Question

 6. For a self locking machine, the efficiency must be ? equal to 50% less than 50% greater than 50% 100% Answer: less than 50% Explanation: View Answer Discuss in Forum Report Question

 7. The centre of gravity of a right circular solid cone is at a distance of.........from its base, measured along the vertical axis ? h/2 h/3 h/4 h/6 Answer: h/4 Explanation: View Answer Discuss in Forum Report Question

 8. The wheels of a moving car possess ? potential energy only kinetic energy of translation only kinetic energy of rotation only kinetic energy of translation and rotation both Answer: kinetic energy of translation and rotation both Explanation: View Answer Discuss in Forum Report Question

 9. Which of the following statement is correct ? The periodic time of a particle moving with simple harmonic motion is the time taken by a particle for one complete oscillation The periodic time of a particle moving with simple harmonic motion is directly proportional to its angular velocity The velocity of the particle moving with simple harmonic motion is zero at the mean position The acceleration of the particle moving with simple harmonic motion is maximum at the mean position Answer: The periodic time of a particle moving with simple harmonic motion is the time taken by a particle for one complete oscillation Explanation: View Answer Discuss in Forum Report Question

 10. The velocity ratio of a simple screw jack with p as the pitch of the screw and I as the length of effort arm, is ? 2?l/p ?/P 2?P/l 2?p/l Answer: 2?l/p Explanation: View Answer Discuss in Forum Report Question