Theory of Machine The driving and driven shafts connected by a Hooke's joint will have equal speeds, if sinθ = ± tanα tanθ = ± cosα cosθ = sinα cotθ = cosα sinθ = ± tanα tanθ = ± cosα cosθ = sinα cotθ = cosα ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction) α = 90° - φ α = 45° + φ/2 α = 90° + φ α = 45° - φ/2 α = 90° - φ α = 45° + φ/2 α = 90° + φ α = 45° - φ/2 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine For an isochronous Hartnell governor (where r₁ and r₂ = Maximum and minimum radius of rotation of balls respectively, S₁ and S₂ = Maximum and minimum force exerted on the sleeve respectively, and M = Mass on the sleeve) S₂/S₁ = r₁/r₂ S₁/S₂ = r₁/r₂ (m.g + S₁)/(m.g + S₂) = r₁/r₂ (m.g - S₁)/(m.g - S₂) = r₂/r₁ S₂/S₁ = r₁/r₂ S₁/S₂ = r₁/r₂ (m.g + S₁)/(m.g + S₂) = r₁/r₂ (m.g - S₁)/(m.g - S₂) = r₂/r₁ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the primary direct crank of a reciprocating engine makes an angle of 'θ' with the line of stroke, then the secondary direct crank will make an angle of _________ with the line of stroke. θ/2 2θ 4θ θ θ/2 2θ 4θ θ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient. Independent of Directly proportional to Inversely proportional to Equal to Independent of Directly proportional to Inversely proportional to Equal to ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The primary unbalanced force is maximum _________ in one revolution of the crank. Four times Twice Sixteen times Eight times Four times Twice Sixteen times Eight times ANSWER DOWNLOAD EXAMIANS APP
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