Theory of Machine A body is said to be under forced vibrations, when There is a reduction in amplitude after every cycle of vibration A body vibrates under the influence of external force None of these No external force acts on a body, after giving it an initial displacement There is a reduction in amplitude after every cycle of vibration A body vibrates under the influence of external force None of these No external force acts on a body, after giving it an initial displacement 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 4 tp 16 tp tp /16 tp /4 4 tp 16 tp tp /16 tp /4 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Tangential acceleration direction is Along the angular velocity May be any one of these Perpendicular to angular velocity Opposite to angular velocity Along the angular velocity May be any one of these Perpendicular to angular velocity Opposite to angular velocity 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. θ 4θ θ/2 2θ θ 4θ θ/2 2θ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The magnitude of linear velocity of a point B on a link AB relative to point A is, (Where ω = Angular velocity of the link AB) ω × AB (ω × AB)² ω² × AB ω × (AB)² ω × AB (ω × AB)² ω² × AB ω × (AB)² ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Angle of dwell of cam is defined as the angle Of rotation of the cam for definite displacement of the follower Moved by the cam from the instant the follower begins to rise, till it reaches its highest position During which the follower returns to its initial position Through which the cam rotates during the period in which the follower remains in the highest position Of rotation of the cam for definite displacement of the follower Moved by the cam from the instant the follower begins to rise, till it reaches its highest position During which the follower returns to its initial position Through which the cam rotates during the period in which the follower remains in the highest position ANSWER DOWNLOAD EXAMIANS APP
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