The direction of the magnetic field.b.The strength of the leakage field at the indication.c.The orientation and shape of the indication.d.All of the above.e.Only a & c. 41.Which of the following magnetization techniques is not recommended for magnetic particle testing? 42.The input current requirements for MT equipment in part depend upon the : 43.When testing by eddy current method discontinuities will be most easily detectedwhen eddy currents are : 44.In Eddy Current testing tubing is generally inspected using : a.U-shaped coil.b.Gap coils.c.Encircling coils.d.None of the above. 45.Eddy Current testing relies on the principle of : 46.Which of the following methods may be used to improve signal – to noise ratio of an eddy current test system? 7
47.At a fixed frequency, in which of the following materials will the eddy current penetration be greatest? 48.In Eddy Current testing, the theoretical maximum testing speed is determined bythe : a.Magnetic flux density.b.Testing frequency.c.Conveyer drive.d.Test coil impedance. 49.Neutron attenuation is greatest in which of the following materials? 50.The best high intensity source of thermal neutrons is : 51.Conversion screen are used in neutron radiography : 52.The helium mass spectrometer detector probe pressure test technique is : a.A quantitative test.b.A qualitative test.c.A semi automatic test.d.None of the above.53.The mass spectrometer vacuum gauge that used to monitor the pressure during the roughing cycle is called a : 54.A virtual leak is :
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- Spring '19