| 1. | The motion of a particle round a fixed axis is ? | |
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translatory
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rotary
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circular
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translatory as well as rotatry
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Report Question| 2. | In a single threaded worm and worm wheel, the number of teeth on the worm is 50. The diameter of the effort wheel is 100 mm and that of load drum is 50 mm. The velocity ratio is ? | |
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50
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100
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150
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200
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| 3. | The force applied on a body of mass 100 kg to produce an acceleration of 5 m/s² ? | |
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20N
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100N
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500 N
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none of these
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| 4. | The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as ? | |
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Newton's first law of motion
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Newton's second law of motion
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Newton's third law of motion
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none of these
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| 5. | The forces, which meet at one point and their lines of action also lie on the same plane, are known as ? | |
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coplaner concurrent forces
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coplaner non-concurrent forces
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non-coplaner concurrent forces
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non-coplaner non-concurrent forces
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| 6. | In order to completely specify angular displacement by a vector, it must fix ? | |
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direction of the axis of rotation
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magnitude of angular displacement
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sense of angular displacement
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all of these
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| 7. | The angle between two forces when the resultant is maximum and minimum respectively are ? | |
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0° and 180°
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180° and 0°
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90° and 180°
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90° and 0°
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| 8. | Whenever a force acts on a body and the body undergoes a displacement, then ? | |
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work is said to be done
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power is being transmitted
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body has kinetic energy of translation
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none of these
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| 9. | According to lami's theorem ? | |
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the three forces must be equal
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the three forces must be at 120° to each other
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the three forces must be in equilibrium
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if the three forces acting at a point are in equilibrium, then each force is proportional to the sine of the angle between the other two
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| 10. | If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is ? | |
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30°
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60°
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90°
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120°
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