Engineering Mechanics Efficiency of a screw jack is given by (where α = Helix angle, and φ = Angle of friction.) tan(α - φ)/tanα tanα/tan (α + φ) None of these tan(α + φ)/tanα tan(α - φ)/tanα tanα/tan (α + φ) None of these tan(α + φ)/tanα ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The term 'Centroid' is None of the listed here The point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis The point of suspension The same as centre of gravity None of the listed here The point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis The point of suspension The same as centre of gravity ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The power developed by a body acted upon by a torque 'T' Newton meter (N - m) and revolving at ω radian/s is given by T.ω/75 (in kilowatts) T.ω/4500 (in kilowatts) T.ω/60 (in watts) T.ω (in watts) T.ω/75 (in kilowatts) T.ω/4500 (in kilowatts) T.ω/60 (in watts) T.ω (in watts) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The velocity ratio in case of an inclined plane inclined at angle 'θ' to the horizontal and weight being pulled up the inclined plane by vertical effort is cosecθ cosθ tanθ sinθ cosecθ cosθ tanθ sinθ ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The unit of work in S.I. units is joule Newton erg kg-m joule Newton erg kg-m ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The unit of angular acceleration is m/s rad/s2 N-m m/s2 m/s rad/s2 N-m m/s2 ANSWER DOWNLOAD EXAMIANS APP
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