Theory of Machine Efficiency of a screw jack is given by tan (α - φ)/tanα tanα/tan (α +φ) tanα/tan (α - φ) tan (α + φ)/tanα tan (α - φ)/tanα tanα/tan (α +φ) tanα/tan (α - φ) tan (α + φ)/tanα ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a band and block brake, the ratio of tensions on tight side and slack side of the band is (where μ = Coefficient of friction between the blocks and the drum, θ = Semi-angle of each block subtending at the center of drum, and n = Number of blocks) T₁/T₂ = μ. θ. n T₁/T₂ = [(1 - μ tanθ)/(1 + μ tanθ)]n T₁/T₂ = [(1 + μ tanθ)/(1 - μ tanθ)]n T₁/T₂ = (μ θ)n T₁/T₂ = μ. θ. n T₁/T₂ = [(1 - μ tanθ)/(1 + μ tanθ)]n T₁/T₂ = [(1 + μ tanθ)/(1 - μ tanθ)]n T₁/T₂ = (μ θ)n ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be To move the ship towards starboard To raise the stern and lower the bow To move the ship towards port side To raise the bow and lower the stern To move the ship towards starboard To raise the stern and lower the bow To move the ship towards port side To raise the bow and lower the stern ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If the opposite links of a four bar linkage are equal, the links will always form a Triangle Pentagon Rectangle Parallelogram Triangle Pentagon Rectangle Parallelogram ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines The algebraic sum of the primary forces must be equal to zero None of these Both (A) and (B) The algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero The algebraic sum of the primary forces must be equal to zero None of these Both (A) and (B) The algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank) m.ω².r sinθ m.ω².r cosθ m.ω².r (sin 2θ/n) m.ω².r (cos 2θ/n) m.ω².r sinθ m.ω².r cosθ m.ω².r (sin 2θ/n) m.ω².r (cos 2θ/n) ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS