| 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
|
||
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
|
||
| 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
|
||
| 4. | The length of a second's pendulum is ? | |
|
94.9 cm
|
||
|
99.4 cm
|
||
|
100 cm
|
||
|
101 cm
|
||
| 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)
|
||
| 6. | For a self locking machine, the efficiency must be ? | |
|
equal to 50%
|
||
|
less than 50%
|
||
|
greater than 50%
|
||
|
100%
|
||
| 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
|
||
| 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
|
||
| 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
|
||
| 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
|
||