Mechanical Construction

In the journal bearings calculations, the moment is the cross product of which of the following two vectors?

1 Mark(s)

a) Force and Radius scalars
b) Radius and Force scalars
c) Radius and Force vectors
d) Force and Radius vectors

Which of the following is valid if two forces are represented by two sides of a triangle in order?

1 Mark(s)

a) The resultant of two forces is represented by the third side in the same sequence
b) The resultant of two forces is represented by the third side in reverse order
c) The resultant’s magnitude is zero
d) The resultant’s magnitude is greatest

The point of application where the total weight can be expected to be concentrated if the gravitational force is dispersed across the volume of the body is called ______

1 Mark(s)

a) The surface of the body
b) The centroid of the body
c) Center of gravity of the body
d) Moment of inertia

What is Engineering Mechanics?

1 Mark(s)

a) Study of bodies under motion without considering forces
b) Application of mechanics to issues involving common engineering aspects
c) Study of bodies only under rest
d) Study of bodies only under motion

Which of the following is a feature of friction?

1 Mark(s)

a) Always acts in the direction opposite to the applied force
b) Not a self-adjusting force
c) Always acts in the direction of applied force
d) It is an active force

Which of the following is termed as an action of pull or push of a body at rest or motion?

1 Mark(s)

a) Torque
b) Momentum
c) Work
d) Force

The moment is the cross product of which of the following two vectors/scalars?

1 Mark(s)

a) Force and Radius scalars
b) Radius and Force scalars
c) Force and Radius vectors
d) Radius and Force vectors

The change in the moment is equal to which of the following?

1 Mark(s)

a) Rotational moment
b) Bending moment
c) Total weight
d) Area under the shear diagram

What is the the effect of a force upon a body according to the principle of transmissibility of forces?

1 Mark(s)

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

Which of the following conditions doesn’t affect the magnitude of the moment?

1 Mark(s)

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

Which of the following statements describes the resultant of two forces?

1 Mark(s)

a) Force that maintains the system in equilibrium
b) Force that has the highest magnitude in the system
c) Force that has the same effect as the two forces
d) Force that has the same effect as one force

Which of the following is the condition for the three-force theorem in mechanics?

1 Mark(s)

a) The force system should be in equilibrium only
b) The force systems should be non-coplanar
c) The system should be co-planar, parallel
d) The force system should be in equilibrium, co-planar, concurrent, or parallel

Which of the following type of screws is used in the machines?

1 Mark(s)

a) Round-threaded
b) Helical-threaded
c) Rectangle-threaded
d) Square-threaded

Which of the following contains moving parts?

1 Mark(s)

a) Beam
b) Frames
c) Machines
d) Truss

Which element of the truss section is made to apply the method of sections in the free body diagram?

1 Mark(s)

a) The whole structure
b) Any section can be used
c) Joints
d) Truss

What is Mechanics?

1 Mark(s)

a) Branch of science which deals with failure analysis
b) Branch of science which deals with conditions of rest or motion of bodies
c) Branch of science which deals with the study of bodies only under rest
d) Branch of science which deals with the study of bodies only under motion

Which of the following is the basic law for mechanics?

1 Mark(s)

a) Newton’s law of viscosity
b) Parallelogram law
c) Newton’s laws of motion
d) Hooke’s law

What is Kinematics?

1 Mark(s)

a) Branch of dynamics which deals with the study of bodies under motion without considering forces
b) Branch of dynamics which deals with the study of bodies at rest
c) Branch of dynamics which deals with the study of bodies under motion by considering forces
d) Branch of dynamics which deals with the study of bodies under the motion

The internal force in structures among the following is?

1 Mark(s)

a) Gravity force
b) Compression force
c) Impact force
d) Bending force

Which of the following is a vector quantity?

1 Mark(s)

a) Density
b) Mass
c) Volume
d) Acceleration

What is the relationship between each force, if three concurrent forces acting on a body according to Lami’s theorem?

1 Mark(s)

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

Which of the following is a branch of mechanics?

1 Mark(s)

a) Statics and kinetics
b) Statics and dynamics
c) Kinematics and dynamics
d) Kinetics and kinematics

Which of the following forces do not cause the rotation?

1 Mark(s)

a) Non-Parallel
b) Non-concurrent
c) Parallel
d) Concurrent

Which part of the truss section is made to employ the method of joints in the free body diagram?

1 Mark(s)

a) Combination of joint and the whole structure
b) The whole structure
c) Truss
d) Joints

In the free body diagrams, the normal forces acting on the belt are in which of the following direction for calculating the equilibrium equations?

1 Mark(s)

a) Horizontally Left
b) Horizontally Right
c) Vertically Upward
d) Vertically Downward

Mechanical Construction : Question 1 of 25