[MDSP] Mastery Exam 03 – Elements

A key that allows the hub to move along the shaft but prevents the rotation of the shaft.

For involute spline, the type of fits used is _____.

Used for permanent fits, are similar to involute splines except that the pressure angle is 14.5°.

Are used as couplings, or in addition to another couplings where, in case of overload, there is danger of danger of injury to machine or to material in process.

A coupling that transmits power via the frictional forces induced by pulling the flanges toward each other over slotted tapered sleeves.

A coupling used for absorbing some shock and vibration that may appear on one shaft and of preventing the occurrence of reversed stresses caused by the shaft deflecting at the coupling.

For a single Hooke’s coupling, the shaft angle should not be greater than about _____.

Journal bearing composed of two principal parts, _____.

When the line of action of the load, bisects the arc of partial bearing, the bearing is said to be _____.

Is the difference in the radii of the bearing and the journal.

Is one in which the radii of the journal and the bearing are the same.

The line that passes through the centers of the bearing and the journal is called the _____.

For hydrocarbon oils, the specific gravity will be closed to _____.

_____ length-diameter ratio was a good compromise for the general case of hydrodynamics bearings is approximately _____.

Operating temperature of oil film ranges _____, or less.

At higher temperatures, the oil oxidizes, more rapidly above _____.

A conclusion repeatedly verified by experiment is that the smoother the surface, _____.

The following are considered advantageous for bearing materials include _____.

For thrust bearing, the speed at moderate operating conditions is _____.

The 200 series bearing is called _____.

The 300 series bearing is called:

A type of roller bearing in which the balls are assembled by the eccentric displacement of the inner ring.

Which of the following is not a type of ball bearing?

Are toothed wheels whose tooth elements are straight and parallel to the shaft axis or used to transmit motion and power between parallel shafts.

The density of a leather belt is _____.

The density of flat rubber belt material is _____.

The breaking strength of oak-tanned belting varies from 3 to more than _____.

If the ends are joined by wire lacing with machine, the usual efficiency of joint is _____.

The tension in the belt due to centrifugal force increases rapidly above about _____.

Experience suggests that the most economical designs are obtained for a belt speed of _____.

For leather belts, recommended speed is:

For fabric belts, recommended speed is:

On high-speed centrifugal blowers, it has been observed that the arc of contact reduced from 180° at rest to _____ in motion.

The recommended initial tension of belt is _____.

The recommended net belt pull for rubber belt is _____.

If two intersecting shafts are to be belt connected, _____ guide pulleys are to be used.

Two shafts at right angles to each other may be connected by the _____ arrangement.

The minimum number of teeth on the smaller sprocket for low speeds is _____.

The minimum number of teeth on the smaller sprocket for moderate speeds is _____.

The minimum number of teeth on the smaller sprocket for high speeds is _____.

Wire ropes are made from cold-drawn wires that are first wrapped into ____.

For maximum quietness, use sprockets with ____ or more teeth.

A wire rope that wires and strands are twisted in opposite direction.

A wire rope that the wires and strands are twisted in the same direction.

Ropes used for haulages, rigging, guard rails.

Used for general purpose rope.

Rope used in lines, hawsers, overhead cranes, and hoists.

The regular materials for wire rope are made of _____.

The ultimate strength of improved flow steel (IPS) is between _____.

The minimum suggested design factors of wire ropes for miscellaneous hoisting equipment is _____.