Theory of Machine The equation of free vibrations of a system is (d²x/dt²) +36 π²x, its natural frequency is 3π Hz 6 Hz 3 Hz 6π Hz 3π Hz 6 Hz 3 Hz 6π Hz 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.r (ω₁ - ω₂)r (ω₁ + ω₂)r (ω₁ - ω₂)2r ω₁.ω₂.r (ω₁ - ω₂)r (ω₁ + ω₂)r (ω₁ - ω₂)2r ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If two moving elements have surface contact in motion, such pair is known as Rolling pair Sliding pair Higher pair Surface pair Rolling pair Sliding pair Higher pair Surface pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to 0.4 0.6 0.2 0.8 0.4 0.6 0.2 0.8 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The periodic time of one oscillation for a simple pendulum is 2π. √(g/l) (1/2π). √(l/g) (1/2π). √(g/l) 2π. √(l/g) 2π. √(g/l) (1/2π). √(l/g) (1/2π). √(g/l) 2π. √(l/g) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Two systems shall be dynamically equivalent when G. of two coincides M.I. of two about an axis through e.g. is equal All of these The mass of two are same G. of two coincides M.I. of two about an axis through e.g. is equal All of these The mass of two are same ANSWER DOWNLOAD EXAMIANS APP
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