Magnetic Test Specific

AC yokes shall be capable of lifting:
1. 10 pounds with a 2 to 4 inch spacing.
2. 10 pounds with a 6 to 8 inch spacing.
3. 50 pounds with a 2 to 4 inch spacing.
4. 50 pounds with a 4 to 6 inch spacing.

DC yokes shall be capable of lifting:
1. 10 pounds with a 2 to 4 inch spacing.
2. 10 pounds with a 6 to 8 inch spacing.
3. 50 pounds with a 2 to 4 inch spacing.
4. 50 pounds with a 4 to 6 inch spacing.

T or F Technicians can wear photo chromatic lenses while performing a magnetic particle testing.

Who is responsible for the review of all written procedures or techniques?
1. A Level II or Level III.
2. A certified and qualified Level II or Level III.
3. A Level III
4. A certified and qualified Level III.

Procedures shall be submitted to the customer:
1. With the completion of the parts under inspection.
2. Prior to the testing of their parts.
3. Only upon request.
4. When a part has been rejected.

What type of magnetizing current can be used to perform testing to this procedure?
1. DC and AC only.
2. DC, AC and HWDC only.
3. DC, AC, HWDC, and FWDC only.
4. DC, AC, HWDC, FWDC and HWAC only.

When performing a magnetic particle test using fluorescent particles, the black light intensity should have a minimum intensity of:
1. 1000 uw/cm2 at the part surface.
2. 1,000 uw/cm2 at a maximum distance of 15 inches.
3. 1,000 uw/cm2 at a minimum distance of 15 inches.
4. 1,000 lux at the part surface.

If the results of any system performance test fail to meet the minimum requirements of this procedure:
1. A higher amperage setting may be used when the magnetic field is verified with a magnetic penetrameter.
2. The equipment can only be used if the magnetic field shows adequate field strength with a field indicator.
3. No part shall be processed until appropriate corrective action has been taken.
4. All results of the performance tests shall be recorded, filed and made available for review.

How often is a concentration test performed?
1. At the beginning of each shift.
2. Every 8 hours.
3. At the beginning of each shift and any time the magnetic particle machine has been turned off for longer than 15 minutes.
4. Only 1 and 2.

When a test is performed with a wet horizontal magnetic particle machine, the agitation of particles should be a minimum of:
1. 30 minutes.
2. 40 minutes.
3. 20 minutes.
4. 60 minutes.

A 100 ml centrifuge tube will have a fluorescent particle concentration of:
1. 1.2 to 2.4 ml
2. 0.2 to 0.4 ml
3. 0.1 to 0.4 ml
4. 1.0 to 2.0 ml

Why is the graduated portion of a centrifuge tube examined under a black light and white light?
1. This is performed in order to verify the particles still fluoresce.
2. Inspection for floating contaminants are easier to identify in the centrifuge tube.
3. Discoloration of particles can be identified and rejected if they do not fluoresce.
4. Inspection is performed for striations, banding or a difference in color.

If the L/D ratio is greater than 15:
1. The part should be inspected twice with a minimum of 10 percent overlap.
2. 15 should be used as the length when calculating the L/D ratio.
3. Ferromagnetic pole pieces of the same diameter shall be used to increase the L/D ratio.
4. A lower amperage can be used.

In all cases, fluorescent wet continuous magnetic particle testing shall be used for the testing of:
1. Class A components.
2. Petroleum hardware.
3. Aerospace components
4. Nuclear components.

In the residual testing method, when are the magnetic particles applied?
1. While the current is engaged.
2. Before the current is engaged.
3. Immediately after the current has been removed.
4. Immediately before the current has been removed.

When should the bath solution be changed?
1. When the contaminants exceed 30% or if the solution is noticeably fluorescent.
2. At intervals not to exceed three months.
3. At intervals not to exceed six months.
4. When the magnetic penetrameter no longer shows adequate indications.

When is corrective action needed during a water break test?
1. When an even coating in the test panel is present.
2. When the test panel shows signs of fluorescent particles under a black light.
3. Only when the solution shows signs of contamination.
4. When bare spots are present on the test panel.

Black light intensity from the face of the UV lens will be a minimum of:
1. 1200 uw/cm2
2. 1200 lux.
3. 1200 foot candles.
4. 1200 btu

T or F Magnetic particle machines shall be checked for internal shorting.

Prior to performing a fluorescent magnetic particle test, a technician should allow his or her eyes to adjust to a darkened area for a minimum of:
1. 5 minutes
2. 10 minutes
3. 1 minute
4. 2 minutes

When is pre-testing demagnetization required?
1. Always
2. Never
3. Only if prior operations have produced a residual magnetic field that may interfere with the testing.
4. Only of the part is placed in service next to magnetically sensitive gauges.

What type of cleaning methods are acceptable?
1. Detergents and solvents.
2. Vapor degreasing and wire brushing.
3. Blasting.
4. All of the above are acceptable.

All records of magnetic particle testing shall be kept on file for a minimum of:
1. 5 years
2. 7 years
3. 9 years
4. 11 years

How often is the ammeter accuracy calibrated?
1. Maximum of 3 months
2. Maximum of 6 months.
3. Maximum of 9 months.
4. Maximum of 1 year.

How often is the black light intensity checked?
1. Maximum of 1 day.
2. Maximum of 3 months.
3. Maximum of 8 hours.
4. Maximum of 2 days.

Small openings such as blind holes leading to the internal cores or passages shall be plugged or masked:
1. Unless otherwise specified by the customer.
2. Only when the customer requests plugging or masking.
3. Only when a dry magnetic particle test is performed.
4. Only when a wet magnetic particle test is performed.

To ensure detection of all discontinuities:
1. Parts should be inspected in at least two directions.
2. The highest possible amperage should be used.
3. Parts should be inspected with a black light.
4. Parts shall be magnetized in at least two opposite directions.

The magnetic field strength should be sufficient enough to:
1. Heat the part to curie temperature resulting in a high residual magnetic field.
2. Show all relevant discontinuities on a ketos ring.
3. Detect all indications, but not so strong that it may mask small indications.
4. Detect all indication on the field indicator.

Adequate field strength may be determined by:
1. Use of parts with known or artificial defects.
2. Use of a Hall-Effect probe gauss meter
3. Use of formulas provided in this procedure.
4. All of the above can be used.

Who is allowed to make accept/reject determinations?
1. The owner.
2. The level II technician
3. The level I technician
4. All of the above

When would a technician use this procedure?
1. When a magnetic particle machine is used for testing.
2. Whenever Mil-Std-1949 is referenced on the work instructions.
3. Whenever Mil-Std-1949 or ASTM-1444 is referenced on the work instructions
4. When no other procedure is available.

Calibration system requirements are performed according to:
1. ASTM E-1444
2. SNT-TC-1A
3. CP-1
4. Mil-Std-410

When magnetizing a component by passing the current directly through the part (head shot) the current shall be:
1. 300 to 800 amps per inch of part diameter
2. 300 to 800 amps per centimeter of part diameter.
3. 500 amps per inch of part diameter.
4. Determined with a Hall-Effect probe gauss meter.

For testing of inclusions in precipitation steels, higher currents may be used up to:
1. 500 to 1000 amps per inch of part diameter.
2. 1000 amps per inch of diameter.
3. 750 amps per inch diameter.
4. 1,200 amps per inch diameter.

The distance along the part’s circumference (ID) that can be effectively magnetized shall be taken as:
1. Two times the diameter of the conductor.
2. Three times the diameter of the conductor.
3. Four times the diameter of the conductor.
4. Five times the diameter of the conductor.

What level individual can make accept/reject determinations?
1. A Level I
2. A Level I under the direct supervision of a Level II or III.
3. A certified Level I.
4. A certified Level I under the direct supervision of a Level II or III.

What size are the smallest detectable defects that can be identified by this procedure?
1. It is not stated in the code.
2. 1/32 inch.
3. The smallest rejectable discontinuity specified in the acceptance criteria.
4. The smallest rejectable discontinuity specified in the rejection criteria.

The entire circumference of the part shall be tested by rotating the part. The required overlap field should be no greater than:
1. 10 percent
2. 15 percent.
3. 20 percent.
4. 5 percent.

For cable wrap or high-fill factor coils, the effective field extends:
1. 4 inches on either side of the coil center.
2. 7 inches on either side of the coil center.
3. 9 inches on either side of the coil center.
4. 11 inches on either side of the coil center.

The longitudinal formulas in this procedure only hold true if the L/D ratio is:
1. Less than 2 and greater than 15
2. Greater than 10 and less than 15
3. Greater than 2 and less than 15.
4. Greater than 2 and less than 20.

If the L/D ratio of 2 or greater cannot be achieved:
1. The part should not be tested with this procedure.
2. A shunt should be used to verify the magnetic field is adequate.
3. The part should be tested by the liquid penetrant method.
4. Ferromagnetic pole pieces of the same diameter shall be used to increase the L/D ratio.

The only time the residual testing method can be performed is when:
1. The customer specifically requests it.
2. This method can never be used.
3. The procedure requires a high amperage on a painted surface.
4. Fluorescent particles are used.

Demagnetization with an AC current and fixed coil should allow the part:
1. To be positioned in the center of the coil and moved to a point approximately 3 feet beyond the coil.
2. To be positioned as closely as possible to the side of the coil and moved to a point approximately 3 feet beyond the coil.
3. To be positioned in the center of the coil and moved to a point approximately 1 foot beyond the coil.
4. To be positioned as closely as possible to the side of the coil and moved to a point approximately 1 foot beyond the coil.

After demagnetization, the residual magnetic field shall not exceed:
1. 3 gauss anywhere on the part.
2. 2 gauss anywhere on the part.
3. 4 gauss anywhere on the part.
4. 5 gauss anywhere on the part.

Who has the responsibility to provide the accept/reject criteria for the part to be tested?
1. The contractor.
2. The testing laboratory.
3. The customer.
4. The procedure.

If the size or part configuration does not facilitate ink stamping:
1. Dying may be used.
2. Metal stamping may be used with the customers permission.
3. Red tagging acceptable parts may be used.
4. Etching may be used.

What are the minimum number of holes indicated when using wet suspension fluorescent particles with a central conductor and an amperage of 3,400?
1. 3
2. 4
3. 5
4. 6

All calibrated equipment shall have:
1. The calibration sticker placed on the calibration report form.
2. The calibration report on hand when testing is performed in the field.
3. A current calibration sticker affixed to it.
4. A calibration performed weekly.

Non-fluorescent magnetic particle testing will be performed with a visible light intensity of:
1. 100 lux
2. 1,000 foot candles
3. 10 foot candles
4. 1,000 lux

When performing a magnetic particle test using fluorescent particles, the background light intensity should be a maximum of:
1. 20 foot candles.
2. 100 lux.
3. 2 lux.
4. 2 foot candles.