Machine Design The helix angle for double helical gears may be made up to 60° 45° 75° 90° 60° 45° 75° 90° ANSWER DOWNLOAD EXAMIANS APP
Machine Design The contact ratio for gears is Greater than one None of these Zero Less than one Greater than one None of these Zero Less than one ANSWER DOWNLOAD EXAMIANS APP
Machine Design In hydrodynamic bearings Do not require external supply of lubricant The oil film pressure is generated only by the rotation of the journal The oil film is maintained by supplying oil under pressure Grease is used for lubrication Do not require external supply of lubricant The oil film pressure is generated only by the rotation of the journal The oil film is maintained by supplying oil under pressure Grease is used for lubrication ANSWER DOWNLOAD EXAMIANS APP
Machine Design A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be τ/2 τ 2 τ 4 τ τ/2 τ 2 τ 4 τ ANSWER DOWNLOAD EXAMIANS APP
Machine Design If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio Remains unchanged None of these Decreases Increases Remains unchanged None of these Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Machine Design The anti-friction bearings Have high initial cost Can carry both radial and thrust loads All of these Have low starting and low running friction at moderate speeds Have high initial cost Can carry both radial and thrust loads All of these Have low starting and low running friction at moderate speeds ANSWER DOWNLOAD EXAMIANS APP
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