Theory of Machine The ratio of the driving tensions for V-belts is __________ times that of flat belts.(Where β = Semi-angle of the groove) sinβ secβ cosβ cosecβ sinβ secβ cosβ cosecβ 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 The length of a simple pendulum which gives the same frequency as the compound pendulum, is kG + l₁ kG² + l₁ (kG + l₁²)/ l₁ (kG² + l₁²)/ l₁ kG + l₁ kG² + l₁ (kG + l₁²)/ l₁ (kG² + l₁²)/ l₁ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A body is said to be under forced vibrations, when No external force acts on a body, after giving it an initial displacement None of these There is a reduction in amplitude after every cycle of vibration A body vibrates under the influence of external force No external force acts on a body, after giving it an initial displacement None of these There is a reduction in amplitude after every cycle of vibration A body vibrates under the influence of external force ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The natural frequency of free transverse vibrations due to uniformly distributed load acting over a simply supported shaft is (where δS = Static deflection of simply supported shaft due to uniformly distributed load) 0.4985/ √δS 0.571/ √δS 0.5615/ √δS 0.6253/ √δS 0.4985/ √δS 0.571/ √δS 0.5615/ √δS 0.6253/ √δS ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Minimum number of teeth for involute rack and pinion arrangement for pressure angle of 20° is 30 34 10 20 30 34 10 20 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS