Engineering Mechanics An ideal machine is one whose efficiency is 1 Between 80 and 90% Between 60 and 70 % Between 70 and 80% 1 Between 80 and 90% Between 60 and 70 % Between 70 and 80% ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as Unlike parallel forces Coplanar non-concurrent forces Coplanar concurrent forces Like parallel forces Unlike parallel forces Coplanar non-concurrent forces Coplanar concurrent forces Like parallel forces 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 None of these tan(α - φ)/tanα tanα/tan (α + φ) tan(α + φ)/tanα None of these tan(α - φ)/tanα tanα/tan (α + φ) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The overturning of a vehicle on a level circular path can be avoided if the velocity of vehicle is __________ √(gra/h) Greater than None of these Equal to Less than Greater than None of these Equal to Less than ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Moment of inertia of a circular section about its diameter (d) is πd4/32 πd3/16 πd3/32 πd4/64 πd4/32 πd3/16 πd3/32 πd4/64 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The maximum mechanical advantage of a lifting machine is 1 - m 1 + m m 1 / m 1 - m 1 + m m 1 / m ANSWER DOWNLOAD EXAMIANS APP
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