Theory of Machine In vibration isolation system, if ω/ωn < 2, then for all values of damping factor, the transmissibility will be (where ω = Angular speed of the system, ωn = Natural frequency of vibration of the system) Greater than unity Equal to unity Less than unity Zero Greater than unity Equal to unity Less than unity Zero ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following statement is correct for involute gears? The variation in centre distance of shafts increases radial force. A convex flank is always in contact with concave flank. The pressure angle is constant throughout the teeth engagement. The interference is inherently absent. The variation in centre distance of shafts increases radial force. A convex flank is always in contact with concave flank. The pressure angle is constant throughout the teeth engagement. The interference is inherently absent. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The example of rolling pair is Ball and socket joint Bolt and nut Lead screw of a lathe Ball bearing and roller bearing Ball and socket joint Bolt and nut Lead screw of a lathe Ball bearing and roller bearing ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In under damped vibrating system, if x₁ and x₂ are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to log(x₁/x₂) loge(x₁/x₂) x₁/x₂ log(x₁.x₂) log(x₁/x₂) loge(x₁/x₂) x₁/x₂ log(x₁.x₂) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The acceleration of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by ω² R cosθ ω² r₁ sinθ ω² (R - r₁) sinθ ω² (R - r₁) cosθ ω² R cosθ ω² r₁ sinθ ω² (R - r₁) sinθ ω² (R - r₁) cosθ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The factional torque for square thread at the mean radius r while raising load W is given by T = W.r tanφ T = W.r tan(φ + α) T = W.r tan(φ - α) T = W.r tanα T = W.r tanφ T = W.r tan(φ + α) T = W.r tan(φ - α) T = W.r tanα ANSWER DOWNLOAD EXAMIANS APP
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