CS/B.TECH(ME/PE)/SEM-8/ME-824/2012
2012
ADVANCED SENSORS FOR ENGINEERING
APPLICATIONS AND NDT
Time Allotted : 3 Hours Full Marks : 70
The figures in the margin indicate full marks.
Candidates are required to give their answers in their own words as
far as practicable.
GROUP – A
( Multiple Choice Type Questions )
1. Choose the correct alternatives for the following :
10 × 1 = 10
i) Dynamic change in a material can be detected by
a) Magnetic particle testing
b) Acoustic emission monitoring
c) Eddy current testing
d) None of these.
ii) An axial magnetic field can detect flaws
a) Parallel to it b) at an angle to it
c) both (a) & (b) d) none of these.
iii) Materials that can be inspected by magnetic particle
testing must be
a) Ferromagnetic
b) ferrous but non-ferromagnetic
c) both (a) & (b)
d) none of these.
iv) Radiations used for radographic inspection are
a) X-rays b) gamma rays
c) neuron beams d) all of these.
v) Defects in porous objects cannot be detected by
a) radiographic inspection
b) liquid penetrant method
c) ultrasonic inspection
d) all of these.