Engineering Mechanics MCQs (Part-13)

What is the center of gravity of an object?

A The center of mass
B The point where weight acts
C The geometric center
D The point of maximum displacement

What does particle dynamics focus on?

A Energy transfer
B Forces acting on a body
C Motion of a body with forces
D The motion of particles under force

Which type of motion analysis studies forces and equilibrium of rigid bodies?

A Rigid body mechanics
B Fluid dynamics
C Particle dynamics
D Kinematics

What is the main use of the principle of virtual work?

A To calculate the deflection of a structure
B To analyze the energy conversion
C To find forces in equilibrium
D To determine the stress in a material

What is the formula for calculating the moment of inertia of a disc?

A m × r²
B 1/2 × m × r²
C 1/2 × m × r
D 1/4 × m × r²

What type of analysis is used to determine the failure of structures?

A Stress-strain analysis
B Particle dynamics
C Energy analysis
D Structural integrity analysis

What is the formula for calculating the acceleration of an object?

A Force / Mass
B Distance / Time
C Force × Mass
D Velocity / Time

What does stability analysis ensure in engineering?

A The deformation of materials
B The strength of materials
C The safety of a structure
D The velocity of an object

Which type of analysis involves the study of material deformation under load?

A Failure analysis
B Deformation mechanics
C Structural analysis
D Energy analysis

Which principle is used to determine the forces in a system when analyzing equilibrium?

A Force balance principle
B Energy conservation principle
C Momentum conservation principle
D Virtual work principle

What is the main function of mechanical vibrations analysis?

A To calculate work and energy
B To study forces in equilibrium
C To study oscillatory motion
D To measure displacement of particles

What is the purpose of failure analysis in engineering mechanics?

A To analyze rotational motion
B To measure the speed of objects
C To determine the cause of structural failure
D To find the strength of materials

What is the main characteristic of a rigid body in mechanics?

A It rotates under load
B It does not deform under load
C It changes shape over time
D It deforms under load

Which of the following is a method to determine the center of mass of a body?

A Sum of moments / Total mass
B Sum of forces / Total mass
C Sum of distances / Total volume
D Sum of areas / Total length

What is the role of analytical mechanics in engineering?

A To design machines
B To study the properties of fluids
C To analyze material strength
D To analyze motion and forces