what is a screw fastener with a nut on it

The function of the clutch in the machine tools is?

For an evenly distributed and uniform wear on each meshing gear tooth, the ideal design practice is to consider a _______.

This is an externally threaded fastener capable of being inserted into holes in assembled parts, or mating with a preformed internal thread or forming its own thread and of being tightened or released by torquing the head.

A kind of thread in which the width of the thread is approximately equal to its depth and the space between the threads is uniform.

Negative allowance is also called

The distance between similar, equally spaced tooth surfaces in a given direction and along a given li

The sum of addendums and dedendums.

Refers to the surface of the gear between the fillets of adjacent teeth.

The concave portion of the tooth profile where it joins the bottom of the tooth space

Belt slip may take place because of

A substance with metallic properties, composed of two or more elements of which at least one is a metal.

It is the process of deforming a metal physically at temperature below the recrystallization temperature an at a rate to produce strain hardening.

It is the loss of carbon from the surface of steel, occuring during rollig, forging and heat treating, when the surrounding medium reacts wih the carbon.

It involves the loss of ductility because of physical or chemical change of the material.

An indefinite property that refers to the ease with which materials can be cut.

It is a mechanical property which indicates material’s susceptibility to extreme deformation to rolling or hammering.

The process of aging a body (metal) at an elevated temperature.

Heating and slow cooling of a solid metal to alter physical and mechanical properties, producing particular microstructure,removig internal stresses and removing gases.

Heating of ceratin metals above transformation range and then quenching for the purpose of increasing the hardness.

Together with annealing, it causes the combined carbon to transform wholly or in part into graphitic or free carbon.

The process of heating an iron-based alloy to some 100°F above the transformation range with subsequent cooling to below that range in still air at room temperature in order to produce a uniform structure.

Any heating or cooling process of steel that produces a rounded globular form of carbide.

Heating of metal body to sustainable temperature just below the transformation range for steel and holding it at that temperature for a suitable for reducing the internal residual stresses.

The process of adding carbon to the surface of steel by exposing it tp hot carbonaceous solids, liquids or gases - above the transformation temperature.

When the hole is smaller than the shaft, it will take pressure to put the parts together. The allowance is said to be negative and is determined:

A mechanism which usually do the indexing in a machine tool:

It equalizes the energy exerted and the work done thus preventing excessive or sudden changes of speed:

Which of the following is not a structural class of steel?

Hypoid gear is a special type of gear like:

Considered a maximum safe center distance of sprockets should be____ pitches. Very long center distance cause catenary tension on the chain.

Cold working of steel plates make the metal:.

Recommend best cutting angle of drill for work on steel or cast iron is__degrees.

The property that characterizes a material abbility to be drawn into a wire:

What is the common shop practice to prevent solder from running away from surface to be joined?:

Non-ferrous filler metal is melted into grooves ar as fillet on the mother metal; the base metal is not melted. this is commonly used for joining iron based machine parts or in repair works of some materials. It is called:

It is advised that in rubber belts application?mounting, it should have an initial tension of ___inch/ply.

Name the type of chuck commonly used for holding workpiece in a lathe operation? Example 3 - jaw universal chuck, 4 - jaw independent chuck.

V-belts operate efficiently at speed of about (fpm):

What type of gear is used for high speed operation?:

In a pair of gears,__ is the plane perpendicular to the axial plane and tangent to the pitch surface.

A machinery operation whereby done with the work accurately fastened has a reciprocating (forward and backward) motion and the tool head is stationary.

The following pertain to joining of metals except:

The usual ratio of water to soluble oil used as cutting fluid:

The good deoxidizer in steel metling:

What is the common cutting fluids used for cutting metals?

It is considered semi-solid lubricant:

The yield strength of a regular yellow brass (65 to 75% Cu, 30 to 35%Zn) can be increased/improved by:

Used in as cast condition steel casting with carbon content less than__%C

Liners normally made of:

A furnace in melting non-ferrous metals:

A furnace used in metling ferrous metals:

Tooth width measured along the chord at the pitch circle:

The best instrument for measuring a thousand of an inch:

Machine tool used for laying straigth lines on metal surfaces made of sharp tool steel is called:

A lathe machine threading mechanism:

Which of the following is not used to resemble the shape of tool bit?

For moderatre speed of mating gears, the ideal ratio of contact is:

In spur gears, which is not an arc distance?

This refers to the permissible deviation of a dimension from a specified basic size.

When a belt drive is transmitting maximum power,

For a roller chain drive, the slack side tension is approximately ______ of the tight side tension.

It is an alloy of copper with several different elements, one of which is usually tin.

To ensure self -locking in a screw jack, it is essential that the helix angle is

The ratio of the load on a spring to its corresponding axial deflection.

The strength of a shaft with a keyway is almost reduced by as much as

What type of fit do journal bearings have?

A group of thin steel strips for measuring clearances

A gripping device with two or more adjustable jaws set radially

The process of producing checkers on the surface of a piece by rolling chekered depressions into the surface

The clearance between the tooth profiles of a gear tooth

When meshed with a gear, it is used to change rotary motion to reciprocating motion

It consists of shaping a piece b bringing it into contact with a rotating abrasive wheel

A machine tool used to sharpern or shape tools by using an abrasive wheel

Heating above the transformation range and cooling slowly to soften metal and increase in machining

Reheating to a temperature below the transformation range followed by any desired rae of cooling to attain properties of the metal

Heating above the transformation range with subsequent cooling to below that range in still air at room temperature to produce uniform structure of metal

A machine tool used for production of flat surfaces or pieces too large or too heavy to hold in a shaper

A kind of chuck which should not be used where extreme accuracy is required

A hand tool used to measure engine crank web deflections

Cutting ahole by means of rotating tool or work may revolve and to the tool remain fixed in the lathe

A material that can wear away a substance softer than itself

A kind of gear used for heavy duty works where a large ratio of speed is required and are extensively used in speed reducers

A kind of gear used to transmit motion from one shaft to another shaft at angle to the first

An amorphous solid made by fusing silica with a basic oxide

Flexible material used to seal pressurized fluids normally under dynamic conditions

A tool with hardened points used for scribing circles or laying of distances

A machining operation whereby the tool rotates while the feed is stationary

A machining operation whereby the tool reciprocates and the feed is stationary

Ratio of pitch diameter to the number of teeth

The kind of center which is being attached and meshed to the tailstock spindle which is also static while the work is rotating

Which of the following is not part of the head stock

In majority of machine members, the damping capacity of the material should be

Tools usually used in wood pattern making in foundry shop

A shaft that transmits power from a central source to individual machines.

Is the area where metal is melted to form them into a billet.

Is a machine tool, which is used mainly to produce holes in metal parts by the use of rotating bit.

It consists of a ram which is being actuated by the pressure of fluid.

It holds the material to be turned in a lathe machine

It is producing stock having two different diameters at the end being turned.