Q#1: Engineering mechanics deals with:
(A) Analysis of forces and motion on bodies
(B) Chemical reactions
(C) Electrical circuits
(D) Heat transfer
Answer: (A) Analysis of forces and motion on bodies
Q#2: A rigid body is defined as:
(A) A body in which the distance between any two points remains constant regardless of applied forces
(B) A body that can compress easily
(C) A liquid body
(D) A body with no mass
Answer: (A) A body in which the distance between any two points remains constant regardless of applied forces
Q#3: A particle is defined as:
(A) A body whose dimensions are negligible compared to the distances involved
(B) A rigid body
(C) A fluid body
(D) A body with large dimensions
Answer: (A) A body whose dimensions are negligible compared to the distances involved
Q#4: The SI unit of force is:
(A) Newton (N)
(B) Joule (J)
(C) Watt (W)
(D) Pascal (Pa)
Answer: (A) Newton (N)
Q#5: The weight of a body is:
(A) Force due to gravity acting on the body
(B) Mass of the body only
(C) Volume of the body
(D) Density of the body
Answer: (A) Force due to gravity acting on the body
Q#6: Mass of a body is:
(A) Measure of the amount of matter in it
(B) Force
(C) Weight only
(D) Volume only
Answer: (A) Measure of the amount of matter in it
Q#7: A vector quantity has:
(A) Magnitude and direction
(B) Magnitude only
(C) Direction only
(D) Mass only
Answer: (A) Magnitude and direction
Q#8: A scalar quantity has:
(A) Magnitude only
(B) Magnitude and direction
(C) Direction only
(D) Torque only
Answer: (A) Magnitude only
Q#9: The position of a particle in space can be defined by:
(A) Coordinates (x, y, z)
(B) Mass only
(C) Torque only
(D) Volume only
Answer: (A) Coordinates (x, y, z)
Q#10: The unit of moment of force in SI is:
(A) Newton-meter (N·m)
(B) Newton (N)
(C) Pascal (Pa)
(D) Joule (J)
Answer: (A) Newton-meter (N·m)
Q#11: A force system is said to be coplanar when:
(A) All forces lie in the same plane
(B) Forces act in different planes
(C) Only one force acts
(D) Forces are zero
Answer: (A) All forces lie in the same plane
Q#12: A force system is concurrent if:
(A) All forces pass through a common point
(B) All forces are parallel
(C) All forces are zero
(D) Forces are along a circle
Answer: (A) All forces pass through a common point
Q#13: The scalar (dot) product of two vectors gives:
(A) A scalar quantity
(B) A vector quantity
(C) Zero always
(D) Torque only
Answer: (A) A scalar quantity
Q#14: The vector (cross) product of two vectors gives:
(A) A vector perpendicular to the plane containing them
(B) A scalar quantity
(C) Zero always
(D) Mass only
Answer: (A) A vector perpendicular to the plane containing them
Q#15: The principle of transmissibility states:
(A) The external effect of a force on a rigid body remains unchanged if it acts anywhere along its line of action
(B) Torque depends on mass only
(C) Force always acts at the center of mass
(D) Work is zero
Answer: (A) The external effect of a force on a rigid body remains unchanged if it acts anywhere along its line of action
Q#16: The equilibrium of a particle requires:
(A) The vector sum of all forces acting on it is zero
(B) Torque is maximum
(C) Mass is zero
(D) Only one force acts
Answer: (A) The vector sum of all forces acting on it is zero
Q#17: The moment of a force about a point is:
(A) Force multiplied by perpendicular distance from the point to the line of action of the force
(B) Torque divided by speed
(C) Mass multiplied by acceleration
(D) Force only
Answer: (A) Force multiplied by perpendicular distance from the point to the line of action of the force
Q#18: A couple consists of:
(A) Two equal and opposite forces whose lines of action do not coincide
(B) Forces along the same line
(C) Torque per unit mass
(D) Mass only
Answer: (A) Two equal and opposite forces whose lines of action do not coincide
Q#19: The resultant of two forces acting at a point can be found by:
(A) Parallelogram law of forces
(B) Pythagoras theorem only
(C) Hooke’s law
(D) Torque only
Answer: (A) Parallelogram law of forces
Q#20: The free body diagram is used to:
(A) Represent all forces and moments acting on a body
(B) Calculate mass only
(C) Show shaft only
(D) Show torque only
Answer: (A) Represent all forces and moments acting on a body