Machine Design Which of the following is a permanent fastening? Cotters Rivets Keys Bolts Cotters Rivets Keys Bolts ANSWER DOWNLOAD EXAMIANS APP
Machine Design If a load W is applied instantaneously on a bar; Then the stress induced in bar will Decrease with decrease in y Increase with increase in y Depend on other considerations Be independent of ratio of mass of load W to mass of bar (y) Decrease with decrease in y Increase with increase in y Depend on other considerations Be independent of ratio of mass of load W to mass of bar (y) ANSWER DOWNLOAD EXAMIANS APP
Machine Design The maximum efficiency of a square threaded screw is (1 - sinφ)/ (1 + sinφ) (1 + sinφ)/ (1 - sinφ) (1 - sinφ)/ (1 + cosφ) (1 + cosφ)/ (1 - sinφ) (1 - sinφ)/ (1 + sinφ) (1 + sinφ)/ (1 - sinφ) (1 - sinφ)/ (1 + cosφ) (1 + cosφ)/ (1 - sinφ) ANSWER DOWNLOAD EXAMIANS APP
Machine Design The stress in the bar when the load is applied suddenly is __________ as compared to the stress induced due to gradually applied loads. Double Same Three times Four times Double Same Three times Four times 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 4 τ 2 τ τ τ/2 4 τ 2 τ τ ANSWER DOWNLOAD EXAMIANS APP
Machine Design An open belt drive is used when Shafts are arranged parallel and rotate in the opposite directions Shafts are arranged at right angles and rotate in one definite direction Shafts are arranged parallel and rotate in the same directions Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft Shafts are arranged parallel and rotate in the opposite directions Shafts are arranged at right angles and rotate in one definite direction Shafts are arranged parallel and rotate in the same directions Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft ANSWER DOWNLOAD EXAMIANS APP
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