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Chapter 31- Sharp edge defects is

a- Porosityb- Crackc- Fusiond- Gas pore

2- Inspector claim that he found a defect hich is planar! it isa- Porosityb- Crackc- Inclusiond- Slag inclusion

3- " crack hasa- 3 #isibleb- 2 #isible

c- $ #isibled- 1 #isible$- %ne inspector measure the depth of a defect& 'e claims that it is

crack ! hich other dimension is missinga- 'eightb- (epthc- )engthd- *ase metal length

+- " inspector ishes his ife to gi#e a star on his birthday& 'e ant to

gi#e a metal plate ith defect on it& ,he defect must bea- Crack

b- Starc- Craterd- Cluster porosity

- Gas pore si.e must be less thana- 1&+b- 1&$c- &+d- 1

/- " inspector claims that the gas pore alays must be less than 1&+a- 'e is rightb- 'e may be right

c- 'e is not rightd- 'e may or may be right

0- " inspector claims thata- Gas pore must be less than 1&+b- )ess than or eual to 1&+c- "lays be 1&+


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d- Greater than 1&+- hich is dimension of blo hole

a- 4 1&+ cmb- 5 1&+c- 4 1&+ mm

d- 4 1&+16- *lo hole is most probably ina- S7"b- G,"c- FC"d- S

11- If the coating of electrode is damaged and the blo hole occur

there& ,he elding process must be&a- S7"b- G,"c- FC"8

d- S12- "rc blo usually causesa- Slag inclusionb- Inclusionc- Solid inclusiond- Sand inclusion13- "rc blo is due to

a- 8lectric forcesb- Forcesc- 7agnetic forcesd- 8lectro-diamagnetic forces

1$- ,he ultimate result of the arc blo isa- )ack of side all fusionb- )ack of inter run fusionc- )ack of fusiond- *oth a and b

1+- Solid internal inclusion is usually due toa- )ack of elder skillb- If parameters are incorrectc- 7agnetic forcesd- "ll of abo#e

1- ,he inspector claims that the dip transfer is the client need& So

hich elding process they ill usea- ,IGb- 7IGc- S7"d- S

1/- If e ant to do (P, on a eld metal ha#ing spatter the biggest

problem isa- It decreases the strength of the eld metal


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b- ,he problem is maskingc- ,he problem is penetrantd- ,he problem is laboratory

10- ,he laboratory report shos that the result is 9ne but little

strength di:erence in the reuired result in the eld metal& It probably

due toa- Cracksb- Fusionc- ;odsd- Spatter

1- *ulbous counter causesa- Smooth stress concentrationb- Poor toe blendc- Smooth and good toe blendd- *oth a nd b

26- If root ha#e incomplete root penetration then hich is smaller

a- (,,b- ",,c- *oth are euald- *oth a and b

21- ,oe blend limit should be ithina- 2mmb- 3mmc- 2&+mmd- 1mm

22- ,he angle in degree for good toe blend should bea- 26

b- 36c- $6d- +6

23- ,he eld toes should be blend smoothly& ,his indicates thea-


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a- 'ori.ontalb- >erticalc- Inclined- "ll of abo#e

2/- In 2F position there is probability of undercut if length of the

eld isa- 4 mmb- 5 mmc- ? 0mmd- 5 0mm

20- It is appeared that root has been sucked back it isa- ;oot con#e@ityb- ;oot conca#ityc- ;oot problemd- ;oot is improper

2- " canal through sand is

a- Crackb- Conca#ityc- Suck backd- *oth a and b

36- If the elding is not balanced it causesa- )inear miss-alignmentb- "ngular misalignmentc- "lignmentd- (istortion&

31- If the to pieces are not In a plana- )inear misalignment

b- "ngular misalignmentc- "lignmentd- (istortion

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