# Engineering Mechanics Interview Questions

- What is the difference between statics and dynamics?
- What is Newton’s first law of motion?
- What is the difference between a scalar and a vector quantity?
- What is a free body diagram?
- What is the difference between internal and external forces?
- What is the principle of equilibrium?
- What is the difference between a moment and a torque?
- What is the principle of virtual work?
- What is Hooke’s law?
- What is stress and strain?
- What is the difference between a truss and a frame?
- What is the method of joints?
- What is the method of sections?
- What is the difference between an ideal and real machine?
- What is the efficiency of a machine?
- What is work?
- What is power?
- What is energy?
- What is conservation of energy?
- What is potential energy?
- What is kinetic energy?
- What is mechanical energy?
- What is the work-energy principle?
- What is impulse?
- What is momentum?
- What is conservation of momentum?
- What is a collision?
- What is an elastic collision?
- What is an inelastic collision?
- What is a perfectly plastic collision?
- What is a partially plastic collision?
- What is the coefficient of restitution?
- What is torque?
- What is the moment of inertia?
- What is rotational kinetic energy?
- What is angular momentum?
- What is conservation of angular momentum?
- What is a rigid body?
- What is the difference between translational and rotational motion?
- What is a couple?
- What is a force couple?
- What is a reaction force?
- What is a normal force?
- What is a friction force?
- What is Coulomb’s law of friction?
- What is static friction?
- What is kinetic friction?
- What is rolling friction?
- What is air resistance?
- What is terminal velocity?
- What is centripetal acceleration?
- What is centripetal force?
- What is circular motion?
- What is simple harmonic motion?
- What is a spring-mass system?
- What is damping?
- What is resonance?
- What is natural frequency?
- What is forced vibration?
- What is transient response?
- What is steady-state response?
- What is the difference between forced and free vibration?
- What is the difference between amplitude and frequency?
- What is a wave?
- What is wavelength?
- What is wave velocity?
- What is wave period?
- What is wave frequency?
- What is the principle of superposition of waves?
- What is interference?
- What is diffraction?
- What is refraction?
- What is reflection?
- What is standing wave?
- What is resonance in a standing wave?
- What is sound?
- What is the speed of sound?
- What is frequency response?
- What is amplitude response?
- What is phase response?
- What is attenuation?
- What is noise?
- What is signal-to-noise ratio?
- What is the difference between analog and digital signals?
- What is Nyquist’s sampling theorem?
- What is Fourier analysis?
- What is the Laplace transform?
- What is the Z-transform?
- What is the difference between a continuous and discrete system?
- What is feedback?
- What is positive feedback?
- What is negative feedback?
- What is the difference between open-loop and closed-loop systems?
- What is a transfer function?
- What is stability?
- What is Bode plot?
- What is phase margin?
- What is gain margin?
- What is a root locus?
- What is a state-space model?
- What is a controllable system?
- What is an observable system?
- What is a pole-zero plot?
- What is a PID controller?
- What is the difference between elastic and plastic deformation?
- What is the difference between tensile and compressive stress?
- What is the difference between shear stress and normal stress?
- What is the difference between a beam and a column?
- What is the difference between a statically determinate and statically indeterminate structure?
- What is the difference between a concentrated load and a distributed load?
- What is the principle of superposition?
- What is the difference between a cantilever beam and a simply supported beam?
- What is the difference between bending moment and shear force?
- What is the Euler-Bernoulli beam theory?
- What is the difference between a rigid body and a deformable body?
- What is the difference between a kinematic and a kinetic analysis?
- What is a moment of inertia?
- What is the difference between a moment of inertia and a product of inertia?
- What is the parallel axis theorem?
- What is the perpendicular axis theorem?
- What is the difference between a truss and a frame?
- What is the difference between a pin joint and a fixed joint?
- What is the difference between a statically determinate and an indeterminate truss?
- What is the method of joints?
- What is the method of sections?
- What is a shear diagram?
- What is a bending moment diagram?
- What is the difference between a simply supported beam and a continuous beam?
- What is a moment distribution method?
- What is the difference between a concentrated moment and a distributed moment?
- What is a statically determinate beam?
- What is a statically indeterminate beam?
- What is the principle of minimum potential energy?
- What is the difference between a kinematic and a dynamic system?
- What is the difference between a linear and a nonlinear system?
- What is the difference between a conservative and a nonconservative force?
- What is the principle of conservation of energy?
- What is the principle of conservation of momentum?
- What is the principle of impulse and momentum?
- What is the difference between an impulse and a force?
- What is the difference between a centrifugal force and a centripetal force?
- What is the Coriolis force?
- What is the difference between a conservative and a nonconservative force?
- What is the difference between a static and a dynamic friction?