Theory of Machine The length of a simple pendulum which gives the same frequency as the compound pendulum, is (kG² + l₁²)/ l₁ kG² + l₁ (kG + l₁²)/ l₁ kG + l₁ (kG² + l₁²)/ l₁ kG² + l₁ (kG + l₁²)/ l₁ kG + l₁ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The unbalanced force due to revolving masses Constant in magnitude and direction both Varies in magnitude but constant in direction Varies in magnitude and direction both Varies in direction but constant in magnitude Constant in magnitude and direction both Varies in magnitude but constant in direction Varies in magnitude and direction both Varies in direction but constant in magnitude 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 The equation of motion for a vibrating system with viscous damping is (d²x/dt²) + (c/m). (dx/dt) + (s/m). x = 0. If the roots of this equation are real, then the system will be Over-damped Without vibrations Under damped Critically damped Over-damped Without vibrations Under damped Critically damped ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The arrangement is called bevel gearing, when two __________ are connected by gears. Non-intersecting and non-coplanar shafts Intersecting and coplanar shafts Parallel and non-coplanar shafts Parallel and coplanar shafts Non-intersecting and non-coplanar shafts Intersecting and coplanar shafts Parallel and non-coplanar shafts Parallel and coplanar shafts ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 10 rad/s. When the shaft is rotated at 300 r.p.m., it will whirl with a radius of 3.0 mm 2 mm 2.50 mm 2.22 mm 3.0 mm 2 mm 2.50 mm 2.22 mm ANSWER DOWNLOAD EXAMIANS APP
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