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 0.8 0.6 0.2 0.4 0.8 0.6 0.2 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction) α = 90° + φ α = 45° + φ/2 α = 45° - φ/2 α = 90° - φ α = 90° + φ α = 45° + φ/2 α = 45° - φ/2 α = 90° - φ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient. Independent of Inversely proportional to Equal to Directly proportional to Independent of Inversely proportional to Equal to Directly proportional to ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The centre of gravity of a coupler link in a four bar mechanism will experience No acceleration Only angular acceleration Only linear acceleration Both linear and angular acceleration No acceleration Only angular acceleration Only linear acceleration Both linear and angular acceleration ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a ball bearing, ball and bearing forms a Screw pair Rolling pair Turning pair Spherical pair Screw pair Rolling pair Turning pair Spherical pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The velocity of the belt for maximum power is (where m = Mass of the belt in kg per meter length) √(T/3m) T/3 √(3m/T) (T.g)/3 √(T/3m) T/3 √(3m/T) (T.g)/3 ANSWER DOWNLOAD EXAMIANS APP
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