Applied Mechanics and Graphic Statics The condilion for a lifting machine to be reversible is that its efficiency should be equal to 100% less than 50% more than 50% more than 66.67% equal to 100% less than 50% more than 50% more than 66.67% ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics A particle is dropped from the top of a tower 60 m high and another is projected upwards from the foot of the tower to meet the first particle at a height of 15.9 m. The velocity of projection of the second particle is 22 m/sec 16 m/sec 18 m/sec 20 m/sec 22 m/sec 16 m/sec 18 m/sec 20 m/sec ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The angle of friction is: The force of friction when the body is in motion The angle between the normal reaction and the resultant of normal reaction and limiting friction The ratio of the friction and the normal reaction The force of friction at which the body is just about to move The force of friction when the body is in motion The angle between the normal reaction and the resultant of normal reaction and limiting friction The ratio of the friction and the normal reaction The force of friction at which the body is just about to move ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics If two forces each equal to ‘T’ in magnitude act at right angles, their effect may be neutralized by a third force acting along their bisector in opposite direction whose magnitude will be 3 T 1/2 T √2 T 2 T 3 T 1/2 T √2 T 2 T ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The condition of equilibrium for any system of forces in a plane is None of these That polygon of forces must close Both (A) and (B) That resultant couple must be zero None of these That polygon of forces must close Both (A) and (B) That resultant couple must be zero ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics If two equal forces of magnitude ‘P’ act at an angle ‘θ’, their resultant, will be P tan θ/2 P cos θ/2 2P cos θ/2 2P sin θ/2 P tan θ/2 P cos θ/2 2P cos θ/2 2P sin θ/2 ANSWER DOWNLOAD EXAMIANS APP
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