Correct
Incorrect
✅ The correct answer is option A.
Engineering Mechanics MCQs
The moment of inertia of a square of side a about its base is a4/ 3.
TRUE
FALSE
✅ The correct answer is option A.
The resultant of two forces P and Q acting at an angle θ is
✅ The correct answer is option B.
The angle of the inclined plane at which a body just begins to slide down the plane, is called helix angle.
TRUE
FALSE
✅ The correct answer is option B.
The total momentum of a system of masses (i. e. moving bodies) in any one direction remains constant, unless acted upon by an external force in that direction. This statement is called
Newton’s first law of motion
Newton’s second law of motion
principle of conservation of energy
principle of conservat
✅ The correct answer is option D.
According to lami’s theorem
the three forces must be equal
the three forces must be at 120° to each other
the three forces must be in equilibrium
if the three forces ac
✅ The correct answer is option D.
The velocity ratio of a first system of pulleys with 4 pulleys is
4
8
16
20
✅ The correct answer is option C.
Whenever a force acts on a body and the body undergoes a displacement, then
work is said to be done
power is being transmitted
body has kinetic energy of translation
none of these
✅ The correct answer is option A.
In a screw jack, the effort required to lift the load is given by(where W = Load lifted, α = Helix angle, and φ = Angle of friction.)
P = W tan (α – φ)
P = W tan (α + φ)
P = W tan (φ – α)
P = W cos (α + φ)
✅ The correct answer is option B.
The loss of kinetic energy due to direct impact of two bodies __________ upon the value of coefficient of restitution.
depends
does not depend
✅ The correct answer is option A.