Theory of Machine If the pressure angle is __________, a reciprocating follower will jam in its bearings. Large Too small Too large Small Large Too small Too large Small ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The velocity of sliding of meshing gear teeth is(Where ω₁ and ω₂ are angular velocities of meshing gears and ‘y’ is distance between point of contact and the pitch point) (ω₁ × ω₂) y (ω₁ + ω₂)/y (ω₁ + ω₂) y (ω₁/ω₂) y (ω₁ × ω₂) y (ω₁ + ω₂)/y (ω₁ + ω₂) y (ω₁/ω₂) y ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A machine mounted on a single coil spring has a period of free vibration of tp . If the spring is cut into four equal parts and placed in parallel and the machine is mounted on them, then the period of free vibration of the new system will become tp /4 tp /16 16 tp 4 tp tp /4 tp /16 16 tp 4 tp ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When a shaking force is transmitted through the springs, damping becomes detrimental when the ratio of its frequency to the natural frequency is greater than 1 0.5 2 0.25 1 0.5 2 0.25 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface) (2/3) μ W R (3/4) μ W R μ W R (1/2) μ W R (2/3) μ W R (3/4) μ W R μ W R (1/2) μ W R ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In gears, interference takes place when The tip of a tooth of a mating gear digs into the portion between base and root circles Gear teeth are undercut Gears do not move smoothly in the absence of lubrication Pitch of the gears is not same The tip of a tooth of a mating gear digs into the portion between base and root circles Gear teeth are undercut Gears do not move smoothly in the absence of lubrication Pitch of the gears is not same ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS