Engineering Mechanics Which of the following statement is incorrect? 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 The velocity ratio of a machine is the ratio of load lifted to the effort applied A force acting in the opposite direction to the motion of the body is called force of friction 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 The velocity ratio of a machine is the ratio of load lifted to the effort applied A force acting in the opposite direction to the motion of the body is called force of friction ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Mass moment of inertia of a uniform thin rod of mass M and length (l) about its mid-point and perpendicular to its length is (3/4) Ml² (2/3) Ml² (1/12) Ml² (1/3) Ml² (3/4) Ml² (2/3) Ml² (1/12) Ml² (1/3) Ml² ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is 30° 120° 60° 90° 30° 120° 60° 90° ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Moment of inertia of a triangular section of base (b) and height (h) about an axis through its base, is bh3/12 bh3/4 bh3/8 bh3/36 bh3/12 bh3/4 bh3/8 bh3/36 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The algebraic sum of moments of the forces forming couple about any point in their plane is Both of above are wrong Constant Equal to the moment of the couple Both of above are correct Both of above are wrong Constant Equal to the moment of the couple Both of above are correct ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics In actual machines, mechanical advantage is _________ velocity ratio. Less than None of these Greater than Equal to Less than None of these Greater than Equal to ANSWER DOWNLOAD EXAMIANS APP
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