Theory of Machine If two moving elements have surface contact in motion, such pair is known as Surface pair Rolling pair Sliding pair Higher pair Surface pair Rolling pair Sliding pair Higher pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The primary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is 90° and 180° 0° and 180° 0° and 90° 180° and 360° 90° and 180° 0° and 180° 0° and 90° 180° and 360° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Peaucellier’s mechanism has Four links Twelve links Eight links Six links Four links Twelve links Eight links Six links ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in Transverse vibrations All of these Torsional vibrations Longitudinal vibrations Transverse vibrations All of these Torsional vibrations Longitudinal vibrations ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The two elements of a pair are said to form a higher pair, when they Permit relative motion Have a line or point contact when in motion Have a surface contact when in motion Are kept in contact by the action of external forces, when in motion Permit relative motion Have a line or point contact when in motion Have a surface contact when in motion Are kept in contact by the action of external forces, when in motion 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 = 90° + φ α = 45° + φ/2 α = 45° - φ/2 α = 90° - φ α = 90° + φ α = 45° + φ/2 α = 45° - φ/2 ANSWER DOWNLOAD EXAMIANS APP
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