Inspection Testing in Foundries
Q. Inspection of castings is mainly carried out to detect any flaws in the castings.
A) True
B) False
.
Answer: A
Q. In inspection of castings, salvaging of defective castings cannot be possible in any condition.
A) True
B) False
.
Answer: B
Q. In inspection of castings, destructive type of testing is more reliable than the non-destructive testing.
A) True
B) False
.
Answer: B
Q. Which of the following methods is best for examining surface flaws on the castings?
A) Pressure test
B) Magnetic particle inspection
C) Visual inspection
D) Acoustic emission test
.
Answer: C
Q. Visual inspection is more economical than the other methods of non-destructive testing.
A) True
B) False
.
Answer: A
Q. Visual inspection can be the complete inspection for detecting any defects in the castings.
A) True
B) False
.
Answer: B
Q. It is not possible to detect malformed castings and shut running defects in visual inspection.
A) True
B) False
.
Answer: B
Q. Liquid penetrant testing (LPT) is mainly used for detecting internal blow holes defects in the castings.
A) True
B) False
.
Answer: B
Q. Which of the following types of light is preferred for using fluorescent penetrant in liquid penetrant testing (LPT) method?
A) Normal light
B) Monochromatic light
C) Ultraviolet light
D) Red light
.
Answer: C
Q. In liquid penetrant testing (LPT) method, preparation of testing surface is very critical.
A) True
B) False
.
Answer: A
Q. Which of the following processes is preferred for preparing aluminium ingots for liquid penetrant testing method?
A) Machining
B) Caustic etching
C) Grinding
D) Acid pickling
.
Answer: D
Q. Which of the following inspections is used for detecting invisible surface defects in a nonmagnetic casting?
A) Visual inspection
B) Dye penetrant inspection
C) Radiographic examination
D) Ultrasonic inspection
.
Answer: B
Q. Which of the following methods of inspection is mostly used for ferromagnetic materials?
A) Acoustic emission test
B) Ultrasonic inspection
C) Magnetic particle inspection
D) Visual inspection
.
Answer: C
Q. In MPI method, the magnetic discontinuities lie in a direction parallel to the direction of the magnetic field.
A) True
B) False
.
Answer: B
Q. Any type of particles can be used for the detection of surface discontinuities of material in MPI method.
A) True
B) False
.
Answer: B
Q. Magnetic particle inspection is a very sensitive technique for the detection of defects in the castings.
A) True
B) False
.
Answer: A
Q. For the detection of discontinuities beneath the surface, liquid penetrant testing method can be used.
A) True
B) False
.
Answer: B
Q. Which of the following methods is best for detecting interior flaws in the castings?
A) Liquid penetrant test
B) Visual inspection
C) Magnetic particle inspection
D) Ultrasonic inspection
.
Answer: D
Q.Coarse grained structures of casting material lead to increase attenuation in ultrasonic inspection.
A) True
B) False
.
Answer: A
Q. Ultrasound attenuation has no affects on the detection of discontinuities or defects in the castings.
A) True
B) False
.
Answer: B
Q. Which of the following formulas is used for the calculation of ultrasonic attenuation coefficient (α)?
A) α = 10 log(A0/A)/X
B) α = 20 log(A0/A)*X
C) α = 10 log(A0/A)*X
D) α = 20 log(A0/A)/X
.
Answer: D
Q. In ultrasonic inspection, some standards are taken as a reference to measure the size of discontinuity in the material.
A) True
B) False
.
Answer: A
Q. Monitoring of porosity defects in casting by ultrasonic inspection is very difficult.
A) True
B) False
.
Answer: A
Q. In ultrasonic inspection, there is no chance of rejection of good material.
A) True
B) False
.
Answer: B
Q. What does M.F.F.T. stand for?
A) Maximum Flow Filling Temperature
B) Minimum Flow Filling Temperature
C) Minimum Film Forming Temperature
D) Maximum Film Forming Temperature
.
Answer: C
Q. Which of the following was not a classification of a subject taking the MFFT?
A) Slow accurates
B) Slow in-accurates
C) Fast-Accurates
D) Reflectives
.
Answer: A
Q. Which subject classification of the MFFT has the characteristics, short time spending and high errors making?
A) Fast-accurates
B) Slow-inaccurates
C) Reflectives
D) Impulsives
.
Answer: D
Q. Which subject classification of the MFFT has the characteristics, long time spending and less errors making?
A) Fast-accurates
B) Slow-inaccurates
C) Reflectives
D) Impulsives
.
Answer: C
Q. Which subject classification of the MFFT has the characteristics, short time spending and few errors making?
A) Fast-accurates
B) Slow-inaccurates
C) Reflectives
D) Impulsives
.
Answer: A
Q. Which subject classification of the MFFT has the characteristics, long time spending and high errors making?
A) Fast-accurates
B) Slow-inaccurates
C) Reflectives
D) Impulsives
.
Answer: B
Q. Which of the following cannot be detected using visual inspection?
A) Blowholes
B) Crack within the cast
C) Tears
D) Rattails
.
Answer: B
Q. Negative surface irregularities cannot be caused by which of the following factor?
A) Slag inclusion
B) Oxidation pitting
C) Nitride pitting
D) Shrinkage
.
Answer: C
Q. Positive surface irregularity is caused by excess metal penetration.
A) True
B) False
.
Answer: A
Q. Visual inspection is essentially carried out using a magnifying glass.
A) True
B) False
.
Answer: B
Q. In a dimensional inspection, a part of casting can be broken for the proper inspection of casting.
A) True
B) False
.
Answer: A
Q. Which of the following machines is used for checking the dimensions more accurately?
A) Radiography machine
B) UV machine
C) Coordinate measuring machine
D) Universal testing machine
.
Answer: C
Q. Dimensional inspection does not affect machining of casting rather it may increase time and cost of machining process.
A) True
B) False
.
Answer: B
Q. Computerization in dimensional inspection improves the speed and accuracy of measuring casting dimensions.
A) True
B) False
.
Answer: A
Q. Maintaining of very sharp tolerances of casting cannot be possible by dimensional inspection.
A) True
B) False
.
Answer: B
Q. Heat and the head pressure of molten metal can cause variation in the dimensions of a casting.
A) True
B) False
.
Answer: A
Q. It is not necessary to measure critical dimensions of compact or large castings for dimensional inspection.
A) True
B) False
.
Answer: B
Q. In dimensional inspection, the cost involved in measuring tools is very high.
A) True
B) False
.
Answer: A
Q. By the data concluded from dimensional inspection, it is possible to form casting of exact required dimensions.
A) True
B) False
.
Answer: B
Q. Narrowing the range of required dimensions make the casting more expensive and difficult to produce.
A) True
B) False
.
Answer: A
Q. Mechanical testing of material or casting involves deformation and breakage of materials.
A) True
B) False
.
Answer: A
Q. In testing materials, only un-notched specimen of standard shape and size can be used.
A) True
B) False
.
Answer: B
Q. Apart from UTM machine, servo-hydraulic systems are also used for testing materials which can be controlled manually.
A) True
B) False
.
Answer: B
Q. The tension test is generally used or performed for determining static properties of materials.
A) True
B) False
.
Answer: A
Q. Tension test of brittle material may cause unexpected failure of the material.
A) True
B) False
.
Answer: A
Q. In tension test, the elongation or strain in the elastic region of material can be measured with the help of extensometer.
A) True
B) False
.
Answer: B
Q. Which of the following categories is not the part of hardness testing of materials or castings?
A) Scratch test
B) Indentation test
C) Shear test
D) Rebound test
.
Answer: C
Q. Which of the following properties of a material is assessed by the rebound test of hardness?
A) Toughness
B) Ductility
C) Malleability
D) Resilience
.
Answer: D
Q. In indentation testing of material, the hardness is a function of force and size of the impression.
A) True
B) False
.
Answer: A
Q. Which of the following types of indenter is employed in Brinell hardness test?
A) Diamond pyramid
B) Diamond ball
C) Titanium ball
D) Steel ball
.
Answer: D
Q. In testing of mechanical properties of material, torsion test is more preferred than the tension test.
A) True
B) False
.
Answer: A
Q. Which of the following devices is used for the measurement of angular deformation in torsion test?
A) Tachometer
B) Extensometer
C) Troptometer
D) Slip gauges
.
Answer: C
Q. Destructive tests are generally much easier to interpret than the non-destructive tests.
A) True
B) False
.
Answer: A
Q. Destructive testing is not economical for mass production as this method destroys material for the inspection.
A) True
B) False
.
Answer: B
Q. In destructive testing, all the operations are performed manually, thus it does not require any technologies or electronic devices.
A) True
B) False
.
Answer: B
Q. High speed camera used in destructive testing can give very precise information about the failure of casting or material.
A) True
B) False
.
Answer: A
Q. Destructive testing method can also be economical for large casting or structure.
A) True
B) False
.
Answer: B
Q. Which of the following tests is not the type of destructive testing of materials?
A) Stress test
B) Crash test
C) Hardness test
D) Pressure test
.
Answer: D
Q. Which of the following tests uses a heavy pendulum for the breaking of a specimen while inspection?
A) Pressure test
B) Static tear test
C) Stress test
D) Charpy v-notch test
.
Answer: D
Q. Charpy v-notch test can only estimate the energy absorbed by the fracturing of material.
A) True
B) False
.
Answer: B
Q.The dynamic tear test is mainly used for evaluating fracture properties of ultrahigh strength steel castings.
A) True
B) False
.
Answer: A
Q. In impact testing of materials, the notches are made to reduce the stress concentration.
A) True
B) False
.
Answer: B
Q. The fatigue performance of metallic casting is generally determined by endurance limit of the material.
A) True
B) False
.
Answer: A
Q. Which of the following parameters is also known as stress intensity factor (K)?
A) Creep
B) Proof resilience
C) Fracture toughness
D) Endurance
.
Answer: C
Q. In non-destructive testing, sound test used is a very fine and accurate method of detecting flaws in the castings.
A) True
B) False
.
Answer: B
Q. Impact test for detection of defects in the casting is the most crude and unreliable method of non-destructive testing.
A) True
B) False
.
Answer: A
Q. Which of the following methods of NDT requires leak proofing of casting before inspection?
A) Impact test
B) Visual inspection
C) Sound test
D) Pressure test
.
Answer: D
Q. Which of the following types of rays is used in radiography for the inspection of castings?
A) X- rays
B) Infrared rays
C) Ultraviolet rays
D) Visible rays
.
Answer: A
Q. In radiography, the penetration of rays is much easier with the less density of metal or casting.
A) True
B) False
.
Answer: A
Q. In penetrant testing of NDT, a liquid is penetrated into the cracks of metal by the application of pressure.
A) True
B) False
.
Answer: B
Q.Which of the following methods of inspection uses high frequency of sound waves for the detection of flaws in the castings?
A) Penetrant test
B) Radiography
C) Pressure test
D) Ultrasonic inspection
.
Answer: D
Q. In ultrasonic inspection, a signal processing technique is used for the accurate indication of porosity in the castings.
A) True
B) False
.
Answer: A
Q. Which of the following terms changes in the eddy current testing method for the detection of defects in the castings?
A) Resistance
B) Impedance
C) Conductivity
D) Capacitance
.
Answer: B
Q. There are no restrictions in the eddy current testing method; it can detect defects up to high depth in the castings.
A) True
B) False
.
Answer: B
Q. Eddy current testing method can also be used for the evaluation of heat damage to the metal alloys.
A) True
B) False
.
Answer: A
Q. Acoustic emission testing method is basically employed for the detection of surface discontinuities on the castings.
A) True
B) False
.
Answer: B
