Mercury arc UV bulbs should be handled eith bare hands because

As hot working progresses, the energy required for further processing (assuming the temperature of the part is held constant):

A fatigue crack is a service defect that is caused by a:

The middle portion of a molding flask is called a:

A cause of gas porosity in welds is:

In the resistance welding process:

In a mold, the runner connects:

Metal forming such as rolling, results in:

A welding defect that occurs at the root and runs parallel with the weld is:

Hot working an ingot may produce a product which has:

A disadvantage of dry sand molds when compared to green sand molds is:

A long defect, parallel to the longitudinal axis of a bar and caused by blowholes, cracks or tears introduced in earlier processing and elongated in the direction of rolling or forging is called:

Rapid oxidation of metal surfaces during hot working of a mild steel may;

An advantage of shell molding over green sand molding is:

A burst is _____________ discontinuity.

Bursts usually have the following characteristics:

In a rolling mill, flattening and elongation of metal is accomplished by:

The fuel gas most commonly used in gas welding is:

Cold shuts are most likely to be found in:

Aircraft turbine blades are usually processed by:

The electrodes used for spot welding are usually made of:

A metal forming operation which allows three dimensional control over the shape of the product is:

A forming operation which results in the greatest dimensional accuracy is:

In which of the following joining methods will flaws, when they do occur, be essentially two dimensional?

A flaw which can resemble a cold shut is:

Elements may be added to the filler metal to:

One of the main causes of cold shuts is:

An EDM notch formed in 304 stainless steel may cause:

Which discontinuity is not normally found in a casting?

Non-metallic impurities trapped within the molten metal of a casting are generally called:

Most manufacturing defects in a tube are:

Increasing test sample temperature normally:

When thick and thin casting sections are adjacent to each other, what discontinuity may result?

Heat exchanger tubes are defect prone at regions:

Which of the following discontinuities is not normally associated with a casting?

Which of the following is identified as a casting insert?

The primary difference between magnetic particle testing and other methods of testing using magnetics, such as electromagnetic resonance, electron paramagnetic resonance and eddy current testing is

Two long conductors (wires) are placed parallel and near to each other. When current flows in the same direction in both wires there will exist a

Two long conductors (wires) are placed parallel and near to each other. When current flows in opposite directions in both wires, there will exist a

Magnetic dipole moment is a

The magnitude of the magnetic dipole moment is directly proportional to

The magnitude of a magnetic induction field at a perpendicular distance 'r' from the centre of a long straight conductor with a current 'I' amperes is

When a current is passed through a long circular conductor of radius R such as a wire the maximum magnetic induction field occurs at

The most significant factor contributing to a material possessing magnetic properties is

In normal unmagnetized condition, the domains of a ferromagnetic material are

In ferromagnetic materials the ratio of the magnetic induction field to the magnetic field intensity is called the

The internal magnetic intensity of a specimen brought into an external magnetizing field will always __________ the applied field.

The slope of the virgin magnetization curve at the origin of a hysteresis plot is called the

When a ferromagnetic material is placed in an inducting field H, and H is increased until the incremental permeability is simply the free space permeability this point is called the

The small jumps in magnetism as a ferromagnetic material is exposed to an increasing induction field are termed

A closed magnetic path through one or more materials is considered a magnetic circuit. As such, it can be considered analogous to an electric circuit, the magnetic equivalent to voltage is

Magnetic circuits are equivalent to electric circuits hence have an equivalent equation to Ohm's law, the term equivalent to electrical resistance in magnetics is

In a magnetic circuit, which is equivalent to an electric circuit, the magnetic equivalent to electrical current is

The ability of the magnetic particle method to detect subsurface defects is not determined by

Magnetic particle testing makes use of the phenomenon called

Which stage of processing can magnetic particle testing be used?

Which of the following should not be in the list?

The collection of magnetic particles caught by a leakage field in a magnetic particle test indicates a discontinuity's

Very wide surface cracks may not produce a powder pattern because

Magnetic particle testing would give best results when used on

Which of the following might be considered a disadvantage of magnetic particle testing?

Eddy current testing can also be used to detect surface and sub-surface defects on ferromagnetic materials but is usually inferior to magnetic particle testing because of

The cause of a magnetic particle indication is always a

The void that occurs at the top centre portion of an ingot is usually called a

Segregation is a(n) _________ process discontinuity.

Blowholes not welded shut in subsequent rolling processes can result in

Seams in bar stock formed from under-filled rolls are usually

Seams in barstock formed as a result of over filled rolls are usually

Another name for the "unit pole" is

If a compass needle is brought near a bar magnet the needle will orient itself ______ to the magnetic lines of force at any point.

The Weber is the MKS form of magnetic flux. The cgs unit is called the maxwell. 1 weber = ________ maxwells

The magnetic flux per unit area is called the

Soft iron if brought into the field of a magnet will be

The Hall effect is used to

A Hall detector can be used to measure

The negative magnetizing force required to reduce the flux density in a part to zero after saturation is called

The degree to which a material holds a residual magnetic field is termed

The opposition to the formation of a magnetic flux in a magnetic circuit is referred to as

When an electric current, a magnetic field or an electrical potential drops off to zero, the reduction in amplitude of these quantities is given the same term. That term is

Pulsating "DC" is considered the result of

Commercial single phase alternating current can best be described as a

Short duration currents resulting from sudden changes in electric or magnetic condition within a circuit are called

Which of the following does not belong in the list?

The core material used in an electromagnet is

In magnetic particle testing, solenoids are used for

The wavelength of blacklight used in fluorescent magnetic particle testing is usually around

A solenoid can be considered to consist of several

When a current is passed directly through a part the magnetization that results is considered to be

A shot of magnetizing current passed through a part while clamped between the clamping contacts of a stationary unit is referred to as a(n)

A magnetic particle cluster resulting from a true leakage field but not originating from a metal flaw is a(n)

Ohm's law can be expressed as

In a D.C. series circuit what resistance is required to cause a voltage drop of 170 volts when 5 amps are flowing?

What is the current through a 50 ohm resistor if the potential across the resistor is 12 volts?

Which of the following is the relationship for electric power?

"Conventional current flow" has electrons moving

The left hand rule for determining magnetic field direction applies to

The purpose of the iron core in an electromagnet is to

The lagging of flux density (B) behind the magnetizing force (H) is called

In a transformer, if the voltage in the secondary winding is stepped down, the current in the secondary will be

If Is and Ip are currents, Es and Ep voltages and Ns and Np number to turns in the secondary and primary windings of a transformer, which is not true.