What is the relationship between each force, if three concurrent forces acting on a body according to Lami’s theorem?
a) Directly proportional to the sine of the angle between the other two forces
b) Inversely proportional to the cosine of the angle between the other two forces
c) Directly proportional to the cosine of the angle between the other two forces
d) Inversely proportional to the sine of the angle between the other two forces
Q.2.
Which of the following is a vector quantity?
a) Density
b) Mass
c) Volume
d) Acceleration
Q.3.
What is the the effect of a force upon a body according to the principle of transmissibility of forces?
a) Different at various locations along its line of action
b) Minimum when acting at the body’s centre of gravity
c) Maximum when acting at the body’s centre of gravity
d) The same at all points along its line of action
Q.4.
The moment of the resultant of two concurrent forces to a center in their plane is equal to
a) The algebraic sum of the moments of the components to the same centre
b) The algebraic sum of the moments of the components to a different centre
c) The difference in component moments with respect to a different centre
d) The difference between the components moments at the same centre
Q.5.
Which of the following conditions doesn’t affect the magnitude of the moment?
a) If the point of application of force is opposing the line of action
b) If the point of application of force is along the line of action
c) If the moment of centre is shifted along a line perpendicular to the line of action
d) If the resultant is maximal
Q.6.
Which of the following forces do not cause the rotation?
a) Non-Parallel
b) Non-concurrent
c) Parallel
d) Concurrent
Q.7.
The moment is the cross product of which of the following two vectors/scalars?
a) Force and Radius scalars
b) Radius and Force scalars
c) Force and Radius vectors
d) Radius and Force vectors
Q.8.
Which part of the truss section is made to employ the method of joints in the free body diagram?
a) Combination of joint and the whole structure
b) The whole structure
c) Truss
d) Joints
Q.9.
Which element of the truss section is made to apply the method of sections in the free body diagram?
a) The whole structure
b) Any section can be used
c) Joints
d) Truss
Q.10.
Which of the following contains moving parts?
a) Beam
b) Frames
c) Machines
d) Truss
Q.11.
The change in the moment is equal to which of the following?
a) Rotational moment
b) Bending moment
c) Total weight
d) Area under the shear diagram
Q.12.
Over a block of weight W, the theory of friction is described. Which of the following describes the surface on which of the following block is located?
a) Coloured red
b) Having density in negative
c) The motion of that block is always horizontal
d) Non-rigid
Q.13.
Which of the following type of screws is used in the machines?
a) Round-threaded
b) Helical-threaded
c) Rectangle-threaded
d) Square-threaded
Q.14.
In the free body diagrams, the normal forces acting on the belt are in which of the following direction for calculating the equilibrium equations?
a) Horizontally Left
b) Horizontally Right
c) Vertically Upward
d) Vertically Downward
Q.15.
In the journal bearings calculations, the moment is the cross product of which of the following two vectors?
a) Force and Radius scalars
b) Radius and Force scalars
c) Radius and Force vectors
d) Force and Radius vectors
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