Engineering Mechanics MCQs (Part-5)

What is the formula for calculating power?

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

Which of the following is true for a beam fixed at one end?

A It has a roller support
B It allows rotation at the fixed end
C It restricts both rotation and translation
D It is called a simply supported beam

What is the formula for calculating the moment of inertia?

A Mass × Distance²
B Force × Distance
C Mass × Velocity
D Force / Area

Which of the following is true for a truss structure?

A It is made of curved members
B It carries only axial loads
C It cannot carry tension
D It is used only for vertical loads

What is the formula for calculating the coefficient of friction?

A Mass × Acceleration
B Force × Distance
C Frictional force / Normal force
D Force / Volume

Which of the following is true for a free-body diagram?

A It includes internal forces
B It is used only for beams
C It shows only external forces
D It ignores equilibrium

What is the formula for calculating the center of mass?

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

Which of the following is true for a rigid body?

A It has no deformation under load
B It deforms under load
C It cannot rotate
D It is only used in fluid mechanics

What is the formula for calculating the angular momentum?

A Mass × Acceleration
B Force × Distance
C Mass × Velocity × Radius
D Force / Area

Which of the following is true for a simply supported beam?

A It has fixed supports at both ends
B It has a hinge support at one end and a roller at the other
C It cannot carry bending moments
D It is used only for vertical loads

What is the formula for calculating the strain energy?

A Force × Distance
B Mass × Acceleration
C Force / Area
D 1/2 × Stress × Strain × Volume

Which of the following is true for a pulley system?

A It changes the direction of force
B It increases the input force
C It decreases the input force
D It has no mechanical advantage

What is the formula for calculating the mechanical advantage of a lever?

A Force × Distance
B Mass × Acceleration
C Input arm / Output arm
D Effort arm / Load arm

Which of the following is true for a centroid?

A It is the geometric center of an area
B It is the balance point of a body
C It is often the same as the center of gravity
D All of the above

What is the formula for calculating the work-energy principle?

A Work done = Change in kinetic energy
B Work done = Change in potential energy
C Work done = Force × Distance
D Work done = Mass × Acceleration