Theory of Machine A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of the rotor separately, are 100 Hz and 200 Hz respectively. The lowest critical speed is 12,000 r.p.m. 6,000 r.p.m. 9,360 r.p.m. 5,367 r.p.m. 12,000 r.p.m. 6,000 r.p.m. 9,360 r.p.m. 5,367 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frictional torque transmitted in a flat collar bearing, considering uniform wear, is (where r₁ and r₂ = External and internal radii of collar respectively) (2/3) μ W (r₁ + r₂) (1/2) μ W [(r₁³ - r₂³)/(r₁² - r₂²)] (2/3) μ W [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2) μ W (r₁ + r₂) (2/3) μ W (r₁ + r₂) (1/2) μ W [(r₁³ - r₂³)/(r₁² - r₂²)] (2/3) μ W [(r₁³ - r₂³)/(r₁² - r₂²)] (1/2) μ W (r₁ + r₂) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the body is suspended at the point of suspension, its periodic time and frequency will be ________ as compared to the body suspended at the point of percussion. Four times Same Two times None of these Four times Same Two times None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The behaviour of gases can be fully determined by 2 laws 4 laws 1 law 3 laws 2 laws 4 laws 1 law 3 laws ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a radial cam, the follower moves In any direction irrespective of the cam axis In a direction parallel to the cam axis In a direction perpendicular to the cam axis Along the cam axis In any direction irrespective of the cam axis In a direction parallel to the cam axis In a direction perpendicular to the cam axis Along the cam axis ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach 360° 90° 180° 0° 360° 90° 180° 0° ANSWER DOWNLOAD EXAMIANS APP
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