Theory of Machine The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction) α = 45° - φ/2 α = 90° + φ α = 90° - φ α = 45° + φ/2 α = 45° - φ/2 α = 90° + φ α = 90° - φ α = 45° + φ/2 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The number of links in pantograph mechanism is equal to 4 2 3 5 4 2 3 5 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine To obviate axial thrust, following gear drive is used Single helical gear in which one of the teeth of helix angle a is more Mutter gears Double helical gears having identical teeth Double helical gears having opposite teeth Single helical gear in which one of the teeth of helix angle a is more Mutter gears Double helical gears having identical teeth Double helical gears having opposite teeth ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Sensitiveness of the governor is defined as the ratio of the Sum of the maximum and minimum equilibrium speeds to the mean speed Mean speed to the maximum equilibrium speed Difference of the maximum and minimum equilibrium speeds to the mean speed Mean speed to the minimum equilibrium speed Sum of the maximum and minimum equilibrium speeds to the mean speed Mean speed to the maximum equilibrium speed Difference of the maximum and minimum equilibrium speeds to the mean speed Mean speed to the minimum equilibrium speed ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following is an inversion of a single slider crank chain? Rotary internal combustion engine Pendulum pump All of these Oscillating cylinder engine Rotary internal combustion engine Pendulum pump All of these Oscillating cylinder engine ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If the damping factor for a vibrating system is unity, then the system will be Without vibrations Over damped Critically damped Under damped Without vibrations Over damped Critically damped Under damped ANSWER DOWNLOAD EXAMIANS APP
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