[MDSP] Mastery Exam 21 – Elements

Drossing:

The usual value of helix angle of a drill is:

A twist drill is specified by:

Broaching operation is generally used in automobile industry as:

Select the one that is gear finishing process:

Formed milling operation of cutting gears can be used for cutting which type of gears?

Water should be run at a speed of _____.

A machine tool in which metal is removed by means of a revolving cutter with many teeth, each tooth having a cutting edge which removes Its share of the stock.

Welding operation in which a non-ferrous filler metal melts at a temperature below that of the metal joined but is heated above 450℃.

The process of checking or producing checkers on the surface of a piece by rolling checkered depressions into the surface.

Steels can be strengthened all of the following, EXCEPT:

Modulus of resilience is:

Percentage reduction of area while performing tensile test on cast iron may be of the other of:

Belt slip may take place because of:

The curve that is generally used as the profile of gear teeth:

In roller chain drive, the center-to-center distance between the sprockets, as a general rule, should be between times the pitch.

A partial bearing is one in which:

Aluminum has a rake angle of _____.

In general the length of engagement is more than _____ times the nominal diameter a 50 to 55 percent thread is satisfactory.

Is recommended for the larger thread diameters and for some fine pitch threads.

Broken tap can be removed by.

Are conical gears, that is, gears in the shape of cones, and are used to connect shafts having intersecting axes.

Bevel gears may be classified as being either of the straight- tooth type or the _____.

The teeth of gears are curved but lie In the same general direction as the teeth of straight bevel gears.

Is the same as spiral gears, except that the axis of the pinion is offset relative to the gear axis.

Zerol bevel gears for maximum smoothness and quiteness should be run at _____.

For peripheral speeds above ground gears should be used.

Spiral bevel and hypoid gears are recommended for applications where peripheral speeds exceed _____.

Hypoid gears are recommended for industrial applications:

_____ gears may be used for both speed- reduction and speed-increasing drives.

As a general rule, the amount of metal under the root should be equal to the _____.

On webless type ring gears, the minimum stock between the root line and the bottom of tap drill holes should be _____ of the tooth deep.

Spiral bevel and hypoid gears should, in general, be mounted on anti-friction bearings in an _____ case.

For both straddle mounted and overhung mounted gears the spread between bearings should never be less than _____ of the pitch diameter of the gear.

On overhung mounted gears the spread should be at least _____ the overhung.

The basic pressure angle of bevel gears is _____.

For basic pressure angle of 20 degrees, the number of teeth for no undercut are _____ teeth in the pinion.

Spiral angle of spiral bevel gears is _____.

To assure successful operation, bevel gears must be rigidly mounted within the housing such that the deflection of one gear relative to the other does not exceed _____ either axially or tangential to the pitch diameters.

In general, the same tooth proportions used for Gleasons System spiral bevel gears may be used for spiral bevel gears with spiral angle of from, say, 20 to _____.

The direction of rotation of a bevel gear is determined as _____.

Spiral angle should be selected to give a face contact ratio of _____ to assure smooth tooth action and quiet gears.

The axial thrust load produced on the bearings of a bevel gear is equal to the axial component of the normal load on the _____.

The material most commonly used in the manufacture of bevel gears is _____.

There are 8 cutters in the series for each diametral pitch to cover the full range from _____ pinion to a crown gear.

Class A Bevel gears- Precision gears recommended for peripheral speeds above

The face width should not normally exceed one-third of the pitch cone distance or _____ the pitch.

Pressure angle of worm gears is _____.

The minimum recommended worm pitch diameter is 0.25 inch and the maximum is _____.

The shape of the worm thread in the normal plane is defined as that which is produced by a symmetrical double-conical cutter or grinding wheel having a straight elements and an included angle of _____.