Engineering Mechanics Which of the following statement is incorrect? 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 A force acting in the opposite direction to the motion of the body is called force of friction 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 machine whose efficiency is 100% is known as an ideal machine A force acting in the opposite direction to the motion of the body is called force of friction The ratio of the limiting friction to the normal reaction is called coefficient of friction ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The coefficient of friction depends upon Shape of the surfaces All of these Area of contact Nature of surfaces Shape of the surfaces All of these Area of contact Nature of surfaces ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A machine having an efficiency less than 50%, is known as Neither reversible nor non-reversible machine Reversible machine Non-reversible machine Ideal machine Neither reversible nor non-reversible machine Reversible machine Non-reversible machine Ideal machine ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as Newton's second law of motion Newton's first law of motion None of these Newton's third law of motion Newton's second law of motion Newton's first law of motion None of these Newton's third law of motion ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The unit of angular acceleration is m/s2 rad/s2 N-m m/s m/s2 rad/s2 N-m m/s ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The moment of inertia of a rectangular section 3 cm wide and 4 cm deep about X-X axis is 20 cm4 9 cm4 12 cm4 16 cm4 20 cm4 9 cm4 12 cm4 16 cm4 ANSWER DOWNLOAD EXAMIANS APP
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