Engineering Mechanics A screw jack used for lifting the loads is An ideal machine A non-reversible machine A reversible machine None of these An ideal machine A non-reversible machine A reversible machine None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics In a screw jack, the effort required to lift the load is given by (where W = Load lifted, α = Helix angle, and φ = Angle of friction.) P = W tan (α + φ) P = W tan (φ - α) P = W tan (α - φ) P = W cos (α + φ) P = W tan (α + φ) P = W tan (φ - α) P = W tan (α - φ) P = W cos (α + φ) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The maximum velocity of a particle moving with simple harmonic motion is ω/r ωr ω ω2r ω/r ωr ω ω2r ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact. Less than Greater than Equal and opposite to Equal to Less than Greater than Equal and opposite to Equal to ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The moment of inertia of a square of side a about its diagonal is a⁴/12 a⁴/16 a³/12 a²/8 a⁴/12 a⁴/16 a³/12 a²/8 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
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