RRB JE-Mechanical Engineering Solved Paper-14

Test Preparation on RRB JE-Mechanical Engineering Solved Paper-14

1.

The unit of force in S.I. units is

1kilogram
2newton
3watt
4dyne
5joule.

2.

The unit of work or energy in S.I. units is

1newton
2pascal
3kilogram metre
4watt
5joule.

3.

The unit of power in S.I. units is

1newton metre
2watt
3joule
4kilogram metre/sec.
5pascal per sec.

4.

Forces are called concurrent when their lines of action meet in

1one point
2two points
3plane
4perpendicular planes
5different planes.

5.

Forces are called coplanar when all of them acting on body lie in

1one point
2one plane
3different planes
4perpendicular planes
5different points.

6.

A force acting on a body may

1introduce internal stresses
2balance the other forces acting on it
3retard its motion
4change its motion
5all of the above.

7.

Which is the correct statement about law of polygon of forces ?

1if any number of forces acting at a point can be represented by the sides of a polygon taken in order, then the forces are in equilibrium
2if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon, then the forces are in equilibrium
3if a polygon representing forces acting at a point is closed then forces are in equilibrium
4if any number of forces acting at a point can be represented in direction and magnitude by the sides of a polygon taken in order, then the forces are in equilibrium
5none of the above.

8.

Effect of a force on a body depends upon

1magnitude
2direction
3position or line of action
4all of the above
5none of the above.

9.

If a number of forces act simultaneously on a particle, it is possible

1not a replace them by a single force
2to replace them by a single force
3to replace them by a single force through C.G.
4to replace them by a couple
5to replace them by a couple and a force.

10.

A force is completely defined when we specify

1magnitude
2direction
3point of application
4all of the above
5none of the above.

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