Engineering Mechanics An ideal machine is one whose efficiency is Between 80 and 90% 1 Between 60 and 70 % Between 70 and 80% Between 80 and 90% 1 Between 60 and 70 % Between 70 and 80% ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The mechanical advantage of a lifting machine is the ratio of Load lifted to the effort applied All of these Output to the input Distance moved by effort to the distance moved by load Load lifted to the effort applied All of these Output to the input Distance moved by effort to the distance moved by load ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Whenever a force acts on a body and the body undergoes a displacement, then Work is said to be done Power is being transmitted None of these Body has kinetic energy of translation Work is said to be done Power is being transmitted None of these Body has kinetic energy of translation ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act Upward at its upper end Away from the wall at its upper end Downward at its upper end Towards the wall at its upper end Upward at its upper end Away from the wall at its upper end Downward at its upper end Towards the wall at its upper end ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A lead ball with a certain velocity is made to strike a wall, it falls down, but rubber ball of same mass and with same velocity strikes the same wall, it rebounds. Select the correct reason from the following: The change in momentum suffered by rubber ball is more than the lead ball Both the balls undergo an equal change in momentum None of these The change in momentum suffered by rubber ball is less than the lead ball The change in momentum suffered by rubber ball is more than the lead ball Both the balls undergo an equal change in momentum None of these The change in momentum suffered by rubber ball is less than the lead ball ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The rate of change of displacement of a body is called Acceleration Momentum None of these Velocity Acceleration Momentum None of these Velocity ANSWER DOWNLOAD EXAMIANS APP
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