Machine Design For a shoe brake, the equivalent coefficient of friction is equal to (where μ = Actual coefficient of friction, and θ = Semi-block angle) 4μ sinθ/(2θ + sin 2θ) 4μ sinθ/(θ + sinθ) μ sinθ/(2θ + sin 2θ) 2μ sinθ/(θ + sinθ) 4μ sinθ/(2θ + sin 2θ) 4μ sinθ/(θ + sinθ) μ sinθ/(2θ + sin 2θ) 2μ sinθ/(θ + sinθ) ANSWER DOWNLOAD EXAMIANS APP
Machine Design According to Indian standard specifications, a Grey cast iron designated by 'FG 200' means that the Maximum shear strength is 200 N/mm² Maximum compressive strength is 200 N/mm² Carbon content is 2% Minimum tensile strength is 200 N/mm² Maximum shear strength is 200 N/mm² Maximum compressive strength is 200 N/mm² Carbon content is 2% Minimum tensile strength is 200 N/mm² ANSWER DOWNLOAD EXAMIANS APP
Machine Design While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as Both the ends fixed One end fixed and the other end free One end fixed and the other end hinged Both the ends hinged Both the ends fixed One end fixed and the other end free One end fixed and the other end hinged Both the ends hinged ANSWER DOWNLOAD EXAMIANS APP
Machine Design A fast and loose pulley drive is used when Shafts are arranged at right angles and rotate in one definite direction Shafts are arranged parallel and rotate in the opposite directions 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 at right angles and rotate in one definite direction Shafts are arranged parallel and rotate in the opposite directions 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
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 The face of the tooth is the Surface of the top of the tooth Surface of the tooth above the pitch surface Width of the tooth measured along the pitch circle Surface of the tooth below the pitch surface Surface of the top of the tooth Surface of the tooth above the pitch surface Width of the tooth measured along the pitch circle Surface of the tooth below the pitch surface ANSWER DOWNLOAD EXAMIANS APP
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