Engineering Mechanics MCQs (Part-3)

What is the formula for calculating the moment of a force?

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

Which of the following is true for a couple?

A It has zero moment
B It consists of two equal and opposite forces
C It produces translational motion
D It acts on a single point

What is the principle of hydrostatics?

A Pressure increases with depth
B Pressure decreases with depth
C Pressure is constant at all depths
D Pressure depends only on volume

What is the mechanical advantage of a pulley system?

A Length of the rope
B Number of ropes supporting the load
C Weight of the pulley
D Diameter of the pulley

Which of the following is a property of a material under load?

A Density
B Viscosity
C Elasticity
D Conductivity

What is the centroid of a triangle?

A Intersection of altitudes
B Intersection of angle bisectors
C Intersection of medians
D Intersection of perpendicular bisectors

What is the formula for calculating acceleration?

A Change in velocity / Time
B Distance / Time
C Mass × Velocity
D Force × Distance

Which of the following is true for particle dynamics?

A It considers rotational motion
B It ignores Newton’s laws
C It studies motion of point masses
D It applies only to rigid bodies

What is the formula for calculating work done by a force?

A Force × Distance
B Mass × Acceleration
C Force × Time
D Force × Displacement × cos(θ)

Which of the following is true for rigid body mechanics?

A It considers deformation
B It ignores rotational motion
C It assumes no change in shape
D It applies only to fluids

What is the formula for calculating pressure in a fluid?

A Force / Area
B Density × Gravity × Height
C Mass × Acceleration
D Force × Distance

Which of the following is a simple machine?

A Engine
B Inclined plane
C Turbine
D Generator

What is the formula for calculating the center of gravity of a body?

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

Which of the following is true for motion analysis?

A It studies displacement, velocity, and acceleration
B It ignores Newton’s laws
C It applies only to rotational motion
D It ignores time

What is the formula for calculating the efficiency of a machine?

A (Input work / Output work) × 100
B (Output force / Input force) × 100
C (Input force / Output force) × 100
D (Output work / Input work) × 100