DRDO-CEPTAM Placement-Paper

Aptitude Interview Practice Paper Technical Interview

DRDO PAPER ON 9th MARCH AT HYDERABAD

Hai friends…… This is RAMPRASAD…..I am written the senior technical assistance’ A’ on METALLURGY (Diploma Based exam on 9/03/2008). In exam most of the questions from the p.p.m, thermo dynamics, physical metallurgy, iron making, heat treatment, foundary technology, nonferrous. Less questions from fuels &refractory, steel making, welding, material testing, mechanical metallurgy.

I am written some question( I am not written total question) and answers(only some ans) . Questions are asked only fundamentals. I think exam is very easy for fresher candates.

EXAM PATTERN:
Technical questions    —   40 marks
Aptitude questions      —    10 marks

Exam paper total object type questions.
DURATION: 1 hr
1)pine oils are used in—————–  ans: frothers
2)TTT diagram is also known as——————
a)s-curve   b)c-curve  c)isothermal transformation d)all   ans:d
3)Hyper eutectoid————————-ans: perlite+cemtite
4)In austempring process———formed ans: Bainite
5)gun metalalloy of cu+zn+—— ans: tin
6)In nodular cast iron —-added ans: mg
7)p+f=——ans:c+2
8)line diffect——————ans: edge dislocation
9)permanent mould casting——-ans: centrifugal casting
10)higest co-ordination number—————ans: h.c.p
11)isobaric at constant————————- ans: pressure
12)when temperature and farenheit are same—-ans:-40
13)acicular structure consists like————–ans: needle like
14)which propertite drawn into wires——– ans: ductility
15)without this can not run the program….. ans: operating system
16)if train going to one station to other station ,first half of the of distance at 40km/hr than next half of the distance at 60km/hr  then find the avg. Speed of train—————km/hr
a) 55  b)50 c)55.2  ans: b
17)pyrometallurgy used on  which process———
a)roasting  b)smelting   c)refining
18)phosperus broze are used—–
a)bearings  b)
19)hot top occurs at——————
a)pigiron molds b) ingot molds c0contonuous molds d) ingot molds
20)decarburizing element—————-
a) c b) ni c)cr d) si
21)pvr occurs at constant ———————-
a)temperature b)pressure c)volume
22)increases the clay containt in the  molding sand then
a)permability increases b) number decreses
23)freely available metal
a)au&ag b)cu&ni

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