Applied Mechanics and Graphic Statics The condilion for a lifting machine to be reversible is that its efficiency should be more than 50% more than 66.67% equal to 100% less than 50% more than 50% more than 66.67% equal to 100% less than 50% ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics A weight of 100 kg is supported by a string whose ends are attached to pegs ‘A’ and ‘B’ at the same level shown in below figure. The tension in the string is Applied Mechanics and Graphic Statics mcq question image 150 kg 120 kg 100 kg 130 kg 150 kg 120 kg 100 kg 130 kg ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The angle of friction is: The ratio of the friction and the normal reaction The force of friction at which the body is just about to move The angle between the normal reaction and the resultant of normal reaction and limiting friction The force of friction when the body is in motion The ratio of the friction and the normal reaction The force of friction at which the body is just about to move The angle between the normal reaction and the resultant of normal reaction and limiting friction The force of friction when the body is in motion ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics A train weighing 196 tonnes experiences a frictional resistance of 5(11/22) per tonne. The speed of the train at the top of a down gradient 1 in 78.4 is 36 km/hour. The speed of the train after running 1 km down the slope, is 5 √10 m/sec 5 √3 m/sec 3 √5 m/sec 10 √5 m/sec 5 √10 m/sec 5 √3 m/sec 3 √5 m/sec 10 √5 m/sec ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics If the horizontal range is 2.5 times the greatest height, the angle of projection of the projectile, is 60° 59° 58° 57° 60° 59° 58° 57° ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The ratio of the ranges on the inclined plane with motion upward and with motion downward for a given velocity, angle of projection will be cos (α - β)/cos (α + β) sin (α - β)/sin (α + β) sin (α + β)/sin (α - β) tan (α - β)/tan (α + β) cos (α - β)/cos (α + β) sin (α - β)/sin (α + β) sin (α + β)/sin (α - β) tan (α - β)/tan (α + β) ANSWER DOWNLOAD EXAMIANS APP