Theory of Machine The frictional torque transmitted in a flat pivot bearing, assuming uniform wear, is(Where μ = Coefficient of friction, W=Load over the bearing, R=Radius of bearing) ½μWR ²/₃ μWR μwr ¾μWR ½μWR ²/₃ μWR μwr ¾μWR ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank) m.ω².r (sin 2θ/n) m.ω².r (cos 2θ/n) m.ω².r cosθ m.ω².r sinθ m.ω².r (sin 2θ/n) m.ω².r (cos 2θ/n) m.ω².r cosθ m.ω².r sinθ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Instantaneous center of rotation of a link in a four bar mechanism lies on A point obtained by intersection on extending adjoining links Can’t occur Left side pivot of this link Right side pivot of this link A point obtained by intersection on extending adjoining links Can’t occur Left side pivot of this link Right side pivot of this link ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine V-belts are usually used for Short drives Long and short drives Long drives None of these Short drives Long and short drives Long drives None of these 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 Gears do not move smoothly in the absence of lubrication Pitch of the gears is not same Gear teeth are undercut The tip of a tooth of a mating gear digs into the portion between base and root circles Gears do not move smoothly in the absence of lubrication Pitch of the gears is not same Gear teeth are undercut ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frequency of oscillation of a torsional pendulum is 2πk/r. √(g/l) r/2πk. √(g/l) 2πr/k. √(g/l) r/2πk. √(l/g) 2πk/r. √(g/l) r/2πk. √(g/l) 2πr/k. √(g/l) r/2πk. √(l/g) ANSWER DOWNLOAD EXAMIANS APP
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