| 1. | The unit of power in S.I. units is ? | |
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horsepower
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joule
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watt
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kg-m
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Report Question| 2. | When the spring of a watch is wound, it will possess ? | |
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strain energy
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kinetic energy
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heat energy
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electrical energy
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| 3. | The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as ? | |
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principle of independence of forces
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principle of resolution of forces
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principle of transmissibility of forces
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none of these
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| 4. | The total energy possessed by a system of moving bodies ? | |
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is constant at every instant
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varies from point to point
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is maximum in the start and minimum at the end
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is minimum in the start and maximum at the end
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| 5. | The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as ? | |
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static friction
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dynamic friction
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limiting friction
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coefficient of friction
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| 6. | Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to ? | |
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area of the triangle
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twice the area of the triangle
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half the area of the triangle
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none of these
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| 7. | A machine having an efficiency less than 50%, is known as ? | |
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reversible machine
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non-reversible machine
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neither reversible nor non-reversible machine
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ideal machine
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| 8. | The velocity ratio of a first system of pulleys with 4 pulleys is ? | |
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4
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8
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16
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20
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| 9. | Concurrent forces are those forces whose lines of action ? | |
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lie on the same line
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meet at one point
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meet on the same plane
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none of these
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| 10. | The matter contained in a body, is called ? | |
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impulsive force
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mass
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weight
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momentum
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