Engineering Mechanics If a number of coplanar forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point. Equal to Greater than Less than None of these Equal to Greater than Less than None of these 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 tanα/tan (α + φ) None of these tan(α + φ)/tanα tan(α - φ)/tanα tanα/tan (α + φ) None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The range of a projectile is maximum, when the angle of projection is 45° 90° 30° 60° 45° 90° 30° 60° ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics When a body of mass 'm' attains a velocity 'v' from rest in time 't', then the kinetic energy of translation is mv2 0.5 mgv2 0.5 mv2 mgv2 mv2 0.5 mgv2 0.5 mv2 mgv2 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is None of these Reversible Ideal Non-reversible None of these Reversible Ideal Non-reversible ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The resultant of the two forces ‘P’ and ‘Q’ is ‘R’. If ‘Q’ is doubled, the new resultant is perpendicular to ‘P’. Then P = Q Q = R None of the listed here Q = 2R P = Q Q = R None of the listed here Q = 2R ANSWER DOWNLOAD EXAMIANS APP
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