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CASTING QB and WELD QB

CASTING QB

1) Which is the most preferabe method of findin! sa! inc"sion in the castin!a) PT

b) MTc) RTd) UT

#) Genera$ castin! need probes ofa) High freqb) Low freqc) High dampingd) Low damping

%) In castin!s &hich section &i not de'eop coarse !rain str"ct"rea) Thin section

b) Thick sectionc) Annealed sectiond) Alle) None

() Lades is "seda) to stir the molten liqid to a!oid air bbble formationb) to transport the hot material from the melting eqipment to the moldsc) it is a kind of ladder to monitor casting processd) none

) Gatin! s$stem

a) is sed to feed the metal into ca!it" that shapes the castingb) is sall" fa!orite point for defect concentrationc) connection is sall" determined !isall"d) alle) none

*) Water content in the !reen sand castin!s isa) Less than #$ %b) Less than $ %c) More than '$ %d) None

+) Dra! isa) Upper portion of the (laskb) Lower portion of the flaskc) eparated from cope b" transition lined) Alle) None

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,) Limitation of the !reen sand castin! isa) mall si*e are difficltb) Larger si*e are difficltc) +ts low strength in thin sectionsd) +t ma" ha!e !er" high strength at !er" thick section

-) Which !i'es better ."ait$ castin!s from the defect point of 'ie&a) ,reen sandb) -r" sandc) .ick sandd) Alle) None

1/) 0aster pattern in the In'estment castin!sa) Use wa/ patternb) Low in!estment wood patternc) Metal died) None

11) rocess Limited to Sma castin!s isa) ,reen sandb) -r" sandc) +n!estmentd) (loor and Pit mold

1#) Non ferro"s castin! most$ "se mo"ds made "p ofa) ,reen sandb) -r" sandc) 0a/d) Plastic

1%) 2i!h press"re pipin! "s"a$ "sea) +n!estment castingb) emi centrifgalc) ,reen sand castingd) 1entrifgal casting

1() Whees are "s"a$ made "p ofa) +n!estment castingb) emi centrifgalc) ,reen sand castingd) 1entrifgal casting

1) Gears are "s"a$ made b$ "sin! a) 1entrifgal casting

b)1ontinos castingc)+n!estment castingd)Plastic molds

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CASTING QB - ANSWERS

Q.NO. ANS

1 C

2 B

3 A4 B

5 D

6 A

7 B

8 C

9 B

10 C

11 C

12 D

13 D

14 B

15 B

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WELDS

1) ress"re bond "sesa) 2nl" pressreb) 2nl" temperatrec) 3oth

d) 2nl" base metal is melted

#) 3"sion bond "sesa) 2nl" pressreb) 2nl" temperatrec) 3othd) 3ase metal onl" need to b e heated and not to be melted

%) Which resembe the castin! processa) MA0b) ,MA0c) A0

d) 40

() In fo& bandin!a) 2nl" base metal is meltedb) 2nl" filler metal is meltedc) 3oth base and filler metal is metedd) 2nl" thee pressre and atomic closeness is needed

) If the metin! point of the fier meta is ,*/ De! 3 &itho"t base meta metin!then it ma$be

a) 3ra*ingb) oldering

c) (sion bondingd) alle) none

*) 2i!h probabiit$ of sa! formation is &itha) MA0b) A0c) 40d) ALLe) N2N4

+) Shrin4a!e is a probem in

a) (sion bondingb) Pressre bondingc) (low bondingd) Alle) None

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,) 5er$ Thic4 brid!e sections are &eded b$ "sin!a) MA0b) ,MA0c) ,TA0d) 40

-) Thin sections are &ededa) MA0b) A0c) ,TA0d) 40

1/) Which method is 'er$ sensiti'e to &inds and draftsa) MA0b) ,MA0c) A0d) 40

11) Which &ed method has minim"m 26a) 430b) PLAMA AR1c) L30d) 40

1#) Which &edin! process is done in 'ac""ma) 430b) 40c) L30d) PA0

1%) If $o" &ant to 7oin ar!e areas of t&o or more metas &ith different composition"se

a) LA4R 34AM 04L-+N,b) 4L41R2N 344AM 04L-+N,c) 45PL2+2N 04L-+N,d) -+((U+2N 4L-+N,

1() Which is the Basic 7oint confi!"rationa) 3tt 6ointb) (illet 6ointc) Lap 6ointd) T 6oint

1) 3" penetration is not done ina) 3tt weldb) Lap weldc) (illet weldd) A 7 be) 3 7 c

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WELD QB - ANSWERS

Q.NO. ANS

1 C

2 B

3 D4 B

5 A

6 D

7 A

8 D

9 C

10 B

11 A

12 A

13 C

14 D

15 E

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