Applied Mechanics and Graphic Statics The centre of gravity of a trapezoidal dam section whose top width is a, bottom width is band the vertical side is a, from its vertical face is (a² + ab + b²)/3 (a + b) (b² + bc + c²)/3 (b + c) None of these (a² + ab + c²)/3 (a + c) (a² + ab + b²)/3 (a + b) (b² + bc + c²)/3 (b + c) None of these (a² + ab + c²)/3 (a + c) 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 10 √5 m/sec 3 √5 m/sec 5 √3 m/sec 5 √10 m/sec 10 √5 m/sec 3 √5 m/sec 5 √3 m/sec ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The maximum frictional force which comes into play, when a body just begins to slide over the surface of a another body, is known Limiting friction Rolling friction None of these Sliding friction Limiting friction Rolling friction None of these Sliding friction ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is 0.4 0.3 0.5 0.55 0.4 0.3 0.5 0.55 ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics If the given forces P₁, P₂, P₃ and P₄ are such that the force polygon does not close, then the system will Be in equilibrium Both (A) and (C) Always reduce to a resultant force Always reduce to a couple Be in equilibrium Both (A) and (C) Always reduce to a resultant force Always reduce to a couple ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics? Howe truss Warren truss King post truss Fink truss Howe truss Warren truss King post truss Fink truss ANSWER DOWNLOAD EXAMIANS APP
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