Theory of Machine The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness of the shaft, and I = Mass moment of inertia of the disc attached at the end of a shaft) (1/2π). √(q/I) 2π qI 1/2π 2π. √(q/I) (1/2π). √(q/I) 2π qI 1/2π 2π. √(q/I) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the two elements of a pair have a surface contact when relative motion takes place and the surface of one element slides over the surface of the other, the pair formed is known as a Force-closed pair Self-closed pair Higher pair Lower pair Force-closed pair Self-closed pair Higher pair Lower pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω₁ rad/s in the clockwise direction and the link OB turns with angular velocity ω₂ rad/s in the clockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O) (ω₁ - ω₂)2r (ω₁ - ω₂)r ω₁.ω₂.r (ω₁ + ω₂)r (ω₁ - ω₂)2r (ω₁ - ω₂)r ω₁.ω₂.r (ω₁ + ω₂)r ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the primary direct crank of a reciprocating engine makes an angle of 'θ' with the line of stroke, then the secondary direct crank will make an angle of _________ with the line of stroke. 2θ θ/2 θ 4θ 2θ θ/2 θ 4θ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The steering of a ship means Rolling of a complete ship sideways Movement of a complete ship up and down in vertical plane about transverse axis None of these Turning of a complete ship in a curve towards right or left, while it moves forward Rolling of a complete ship sideways Movement of a complete ship up and down in vertical plane about transverse axis None of these Turning of a complete ship in a curve towards right or left, while it moves forward ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When two links are connected by a pin joint, their instantaneous center lies At the center of circle At the center of curvature At the pin joint On their point of contact At the center of circle At the center of curvature At the pin joint On their point of contact ANSWER DOWNLOAD EXAMIANS APP
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