The load cup of a screw jack is made separate from the head of the spindle to
Enhance the load carrying capacity of the jack
Reduce the effort needed for lifting the working load
Reduce the value of frictional torque required to be countered for lifting the load
Prevent the rotation of load being lifted
- A combination of kinematic pairs, joined in such a way that the relative motion between the links is…
- The contact ratio is given by
- The ratio of maximum fluctuation of energy to the workdone per cycle is called
- In a simple harmonic motion, the velocity vector with respect to displacement vector
- In gears, interference takes place when
- The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon…
- Crowning on pulleys helps
- The relation between number of links (l) and number of joints (j) in a kinematic chain is
- The included angle for the V-belt is usually
- Which of the following is a spring controlled governor?
- The balancing weights are introduced in planes parallel to the plane of rotation of the disturbing mass.…
- When the particles of a body moves perpendicular to its axis, then the body is said to have
- Which of the following is an open pair?
- When the crank is at the inner dead centre, in a reciprocating steam engine, then the acceleration of…
- A body in motion will be subjected to coriolis acceleration when that body is
- In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of…
- When the two elements of a pair have a surface contact when relative motion takes place and the surface…
- In railway axle boxes, the bearing used is
- Throw of a cam is the maximum distance of the follower from
- The advantage of the piston valve over the slide valve is that in the former case
- In automobiles the power is transmitted from gear box to differential through
- The contact ratio for gears is
- The driving and driven shafts connected by a Hooke's joint will have equal speeds, if
- There are six gears A, B, C, D, E and F in a compound train. The numbers of teeth in the gears are 20,…
- Length of arc of contact is given by
- The frictional torque transmitted in a flat pivot bearing, considering uniform pressure, is (where μ…
- Which of the following statement is correct as regard to the difference between a machine and a structure?
- The minimum force required to slide a body of weight W on a rough horizontal plane is
- Two systems shall be dynamically equivalent when
- The frictional torque transmitted in a flat collar bearing, considering uniform wear, is (where r₁…