Curioustab

Home » Mechanical Engineering » Engineering Mechanics

For a self locking machine, the efficiency must be

equal to 50%
less than 50%
greater than 50%
100%

Correct Answer: less than 50%

← Previous Question Next Question→

More Questions from Engineering Mechanics

A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of
The efficiency of a screw jack is maximum, when(where α = Helix angle, and φ = Angle of friction.)
The above figure shows the three coplaner forces P, Q and R acting at a point O. If these forces are in equilibrium, then
The range of projectile(R) on an upward inclined plane is
In a wormed geared pulley block, if the number of teeth on the worm wheel is doubled, then its velocity ratio is also doubled.
In a framed structure, as shown in the below figure, the force in the member CD is tensile in nature.
The moment of inertia of a solid cylinder of mass m, radius r and length l about the longitudinal axis or polar axis is
The acceleration of a particle moving with simple harmonic motion is __________ at themean position.
The velocity of a particle moving with simple harmonic motion is __________ at the mean position.
The centre of gravity of a hemisphere lies at a distance of 3r / 8 from its base measured along the vertical radius.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion