Machine Design The endurance limit for a mirror polished material will be __________ as compared to unpolished material. Same None of these Less More Same None of these Less More ANSWER DOWNLOAD EXAMIANS APP
Machine Design Antifriction bearings are Hydrodynamic bearings Thin lubricated bearings Sleeve bearings None of these Hydrodynamic bearings Thin lubricated bearings Sleeve bearings None of these ANSWER DOWNLOAD EXAMIANS APP
Machine Design The groove angle of the pulley for rope drive is usually 60° 35° 45° 20° 60° 35° 45° 20° ANSWER DOWNLOAD EXAMIANS APP
Machine Design Which of the following statement is correct regarding power screws? The efficiency of a self locking screw can not be more than 50% If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50% The efficiency of Acme (trapezoidal) thread is less than that of a square thread Both (A) and (B) The efficiency of a self locking screw can not be more than 50% If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50% The efficiency of Acme (trapezoidal) thread is less than that of a square thread Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the belt is transmitting maximum power, the belt speed should be (Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N)) √(Pmax / m) √(Pmax / 3m) √(Pmax / 2m) √(3m /Pmax) √(Pmax / m) √(Pmax / 3m) √(Pmax / 2m) √(3m /Pmax) ANSWER DOWNLOAD EXAMIANS APP
Machine Design The ratio of driving tensions for flat belts, neglecting centrifugal tension, is (where T₁, and T₂ = Tensions on the tight and slack sides of belt respectively, μ = Coefficient of friction, between the belt and pulley, and θ = Angle of contact) T₁/T₂ =eμθ T₁/T₂ = log μθ T₁/T₂ = μθ log (T₁/T₂) = μθ T₁/T₂ =eμθ T₁/T₂ = log μθ T₁/T₂ = μθ log (T₁/T₂) = μθ ANSWER DOWNLOAD EXAMIANS APP
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