Engineering Mechanics A machine having an efficiency greater than 50%, is known as Neither reversible nor non-reversible machine Reversible machine Ideal machine Non-reversible machine Neither reversible nor non-reversible machine Reversible machine Ideal machine Non-reversible machine ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Efficiency of a screw jack is given by (where α = Helix angle, and φ = Angle of friction.) tan(α - φ)/tanα tan(α + φ)/tanα None of these tanα/tan (α + φ) tan(α - φ)/tanα tan(α + φ)/tanα None of these tanα/tan (α + φ) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The centre of gravity of an isosceles triangle with base (p) and sides (q) from its base is (4p² - q²)/6 [√(4p² - q²)]/6 (p² + q²)/4 (p² - q²)/4 (4p² - q²)/6 [√(4p² - q²)]/6 (p² + q²)/4 (p² - q²)/4 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The rate of doing work is known as None of these Power Potential energy Kinetic energy None of these Power Potential energy Kinetic energy ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics In order to determine the effects of a force, acting on a body, we must know Nature of the force i.e. whether the force is push or pull Line of action of the force All of these Magnitude of the force Nature of the force i.e. whether the force is push or pull Line of action of the force All of these Magnitude of the force ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The angle between two forces when the resultant is maximum and minimum respectively are 90° and 180° 180° and 0° 0° and 180° 90° and 0° 90° and 180° 180° and 0° 0° and 180° 90° and 0° ANSWER DOWNLOAD EXAMIANS APP
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