Engineering Mechanics The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is 2mr²/3 mr²/3 2mr²/5 3mr²/5 2mr²/3 mr²/3 2mr²/5 3mr²/5 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Which of the following statement is incorrect? A force acting in the opposite direction to the motion of the body is called force of friction The velocity ratio of a machine is the ratio of load lifted to the effort applied A machine whose efficiency is 100% is known as an ideal machine The ratio of the limiting friction to the normal reaction is called coefficient of friction A force acting in the opposite direction to the motion of the body is called force of friction The velocity ratio of a machine is the ratio of load lifted to the effort applied A machine whose efficiency is 100% is known as an ideal machine The ratio of the limiting friction to the normal reaction is called coefficient of friction ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The motion of a particle round a fixed axis is Circular Translatory Rotary Translatory as well as rotary Circular Translatory Rotary Translatory as well as rotary ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Work done is said to be zero, when Some force acts on a body, but displacement is zero No force acts on a body but some displacement takes place Either (A) or (B) None of these Some force acts on a body, but displacement is zero No force acts on a body but some displacement takes place Either (A) or (B) None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.) IP = IG - Ah2 IP = IG + Ah2 IP = Ah2 / IG IP = IG / Ah2 IP = IG - Ah2 IP = IG + Ah2 IP = Ah2 / IG IP = IG / Ah2 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics In order to completely specify angular displacement by a vector, it must fix All of these Sense of angular displacement Magnitude of angular displacement Direction of the axis of rotation All of these Sense of angular displacement Magnitude of angular displacement Direction of the axis of rotation ANSWER DOWNLOAD EXAMIANS APP
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