NALCO for Mechanical Enggineering on 26th of September, 2010. Overal the question paper was somewhat easy and some questions are upto the standard and needs some basic understandings of the candidate. Here i am posting some of the questions, i have remembered. The options may be different as it came in NALCO paper, the questions are like that as follows. There are 120 questions(60 Technical and 60 non-Technical including aptitude, G.K, Engg and LR) having 2 hours and 30 minutes of durations.

Technical:

1) The ratio between hoop stress and longitudinal stress is:

2

2) Maximum efficiency of screw jack having square threads and friction angle of 30 degree:

33%

3) The ratio of no.of teeth and pitch circle diameter in case of gear:

Diametrial pitch

4) If any core is required in case of wire ropes?

Yes

5) How many outermost electrons are present for semiconductor material.

Ans.4

6) Which of the following is a wrong property for austenite?
a) Ductility b)hardness c) magnetism d) none

Ans: magnetism

7) Polyester belongs to
a)Thermoplastic b) thermosetting d) PVCd) phenolics

Ans: thermosetting

8) The purpose of sprue is:
Ans: supply the molten metal from pouring basin to gate

9) For getting steel from C.I which quantity has to be controlled.

Ans: carbon

10) Airplane parts are machined by which processes? Unconventional machining.

11) Unit of power in SI system is:

Watt

12) Value of universal gravitational constant G: 6.66X10^-11

13) Emissive power of a perfect body depends on:

a)wavelength b) temperature c) nature of the body d)all

Ans: all

14) perfectly black body absorbs all incident rays falling on it.

15) The KE of molecules depends on: absolute temp

16) Absolute zero pressure can be achieve at:

Ans: when the molecular vibration among the molecule tends to negligible.

17) Equal volume of all gases weighs as much to their molecular weights,

18) Locomotive boilers are:
horizontal internally fierd, multitubular mobile boiler

Ans: All

19) Babcock Wilcox boilers having water tubes:

a) Vertical b) horizontal c) inclined d) vertical and inclined ans: inclined

20) Boilers are manufactured according to which standards

a) IBR B) ASTMC) DIN

21) Efficiency of diesel engine with increase in cut-off ratio:

a)increase b) decreases d) remains constant d) none Ans:decreases

22) In single stage centrifugal compressor, the variations as speed increases:

Ans: flow increases and efficiency decreases

23) A heat engines consumes which value of oil?

a) HCV b) LCV c) net CV d) none Ans: LCV

24) Which of the followings are not IC engines

a)steam turbine b)gas turbine c)2-stroke petrol engine d) 4-stroke petrol engine Ans: steam turbine
25) Crankcase explosion in case of IC engines occurs :First with mild followed by big explosion
26) Hydraulic accumulator consists of: a piston and a ram
27) A mould is housed in a:

a) flask b) cope c) drag d)moulding box
28) hydrogen have how many isotopes? Ans: 3
29) Drift loss in case of natural draft cooling tower?
30) ?Approach? means what in case of cooling tower
31) The purpose of true centrifugal casting is: to cast symmetrical objects about the axis
32) A basic shaft is whose upper deviation is zero.
33) The parts of a casting to be machined is coloured in red colour.
34)A continuous beam is one which has supports at more than one points.
35)A reversible machine in case of screw jack is having efficiency greater than 50%.
36) Normally steam turbine rotates at:

a) Natural frequency b) at much higher than natural frequency c) at much lower than natural frequency.

37) PCD of involutes profile gears depends upon:

a) Pressure angle b) it?s an element helps in manufacturing

c)proportional to base diameter ans: pressure angle
38) Inclined venturimeter gives:

a) same reading b) less reading c) more reading ans: same readings
39) Flow of water from nozzle:

a) Elliptical b) parabolic c) hyperbolic d) circular

Besides this there are 4 questions from nuclear power plant, 2 from hydroelectric plant and some others i have not remembered properly.
Non Technical:

1. What is the currency of China

a. Yuan b. dollar c. euro

2. What is minimum gap between tow session of parliament.
a. 3 month b. 6 month c. 12 month d non of these
3. Who got the Rajiv Gandhi khel rattan 2010
a. abhinav bindra b. saina nehwal c. vishawa Nathan

Choose the synonyms of the following.

4. PIQUANT

5. CLANDESTINE

6. OBDURATE

Find the next terms of the series

8. 5,17,37,65,?..,145
a. 95 b. 101 c. 107

9. 5, 1.5, 4.5, 13.5?
a. 40.5 Ans

10. 3, 11, 19, 35, 51, 75…

a. 91 Ans
11. P man can do a work in the day. In how many day np man do this work and times
a. time/n Ans

They given on passage with 5 Questions
One data interpretation with 3 Questions

Ten Questions from Data sufficiency like is two consecutive no. p>q

12. p+q=odd 2. p.q=even

Second part is technical in they give very simple Questions

13. Full form of MIPS
a. Million instructions per seconds

14. ~ ~A
a. A b. ~A c. 0 d. 1

15. ~A(A+1)
a.0 b .A c. ~A d. ??

16. (A+B)`
a. A`.B`ans

17. Which of the following language platform independent
a. Java

18. Which is the typical error
a syntex error b. semantic error c. run time error

19. Cache memory

Is which type of memory? a) Primary b) Secondary

20. Magnetic Flux is measured by which meter?

Ans: Flux meter

21. If diagonal of square is increased by 30% then how many % increases in area?

a) 69%

22. Which country is allow for wolf hunting after 45 years ban?

Ans: SWEDEN

23. Ellora is temple of

Ans: Buddist, Hindu, jain
24) Barcodes are read by:a)card reader b)laser c) floppy etc

Ans: card reader

25) How many deemed universities are de-recognised by the government in 2010?

Ans:44

26) Among the following cities, which one is at the highest altitude above mean sea level?
(a) Bangalore (b) Delhi(c) Jodhapur(d) Nagpur

Ans: Bangalore
Dear friends, I may be wrong with my answers, please cross check with your answer.

Thanks

Nirakar Parida
Nalco Candidate-Experiences
Nalco Candidate Experience
Hi Friends, I appeared in the test of Nalco there are two part first general aptitude and one technical both contain 60-60 Questions.
Time for both 2:30 hours
First part contain some questions
1. What is the currency of china

a. yuan b. dollar c. euro
2. What is minimum gap between tow session of parliament.
a. 3 month b. 6 month c. 12 month d non of these
3. Who got the Rajiv Gandhi khel rattan 2010
a. abhinav bindra b. seina nehwal c. vishawa Nathan
Choose the synonyms of the following.

4. PIQUANT
5. CLANDESTINE
6. OBDURATE

Find the next terms of the series

8. 5,17,37,65,?..,145
a. 95 b. 101 c. 107 ????
9. 5,1.5,4.5,13.5?????
a. 40.5 ans
10. 3,11,19,35,51,75??..
a. 91 ans

11. p man can do a work in the day. In how many day np man do this work and times
a. tm/n ans

They given on passage with 5 Questions
One data interpretation with 3 Questions

Ten Questions from data sufficiency like is two consecutive no. p>q
1. p+q=odd 2. p.q=even

Second part is technical in they give very simple Questions

1 Full form of MIUs
a. Million instructions per unit ans
2. ~ ~A
a. A b. ~A c. 0 d. 1

3. ~A(A+1)
a.0 b .A c. ~A d. ??

4. (A+B)`
a. A`.B`ans
5. Which of the following language platform independent
a. java ans

6. Which is the typical error
a. syntax error b. semantic error c. run time error

7. Cache memory is which type of memory?

8. Magnetic Flux is measured by which meter?

Ans Fluxmeter

9. If diagonal of square is increased by 30% then how many % increases in area?

10. Which country is allow for wolf hunting after 45 years ban?

Ans SWEDEN

11. Ellero is temple of

Ans Buddist, Hindu, jain

Technical Questions for Electrical dicipline

1.Turboalternator is having

Ans larger diameter and small axial length

2. Air gap in induction motor

3. Fuse is which type of device

Ans Protective device

4. Circuit breaker is

Ans Current Iterupting device

5. Sag is provided in transmission line

6. Service main is

Ans secondary distribution

7. Dc motor

Ans convert electrical energy in mechnical energy

8. Current in armature of Dc motor

Ans AC

9. Pointer of potientiometer is made up of

Ans silver

10. Relative permeability of metals rages from

Ans 1-10

11. Relative permeability leeser than 1

Ans diamagnetic material

12. Material which never get saturate

13. Yoke is made up of

14. Core is made up of

15. Thermal efficiency of steam power plant

16. Effeciency of primary cell

17. If rating of 1 phase induction motor is same as 3 phase induction motor then size is 3 phase induction motor

18. Distidution supplys how many voltage

19. If reactive power get increase than P.F

20. If lagging reactive power get increase than P.F

21 In house connection are in parallel because

22 Dc motor generally have which typof load

All the question are from basic knowledge. I think cutoff will goes very high.
Nalco Candidate-Experiences
Nalco Exam Paper

Dear Friends, I’m Praveen. When i didn’t saw any mechanical paper. I feel very sad but now i’m shareing the whole test paper for NALCO, What i remembered.

Aptitute: 60 Questions

Technical: 60 Questions

Time: 2 hours 30 mins

Technical:
Q1. Polyster belongs to:

a) thermoplastic b) thermosetting c) PVC d) all

Q2. Ratio of hoop stress to longitudinal stress

a)1/2 b)2 c)1/4

Q3. Flow of water frm nozzle:

a) elliptical b) parabolic c) hyperbolic d) circular

Q4. Inclined venturimeter gives:

a) same reading b) less reading c) more reading

Q5. Max friction comes to play when a body jst begins to slide over another surface:

a) dynamic friction b) static friction c) limiting friction

Q6. Continous beam is:

a) one support at the end b) more than two support

Q7. No. of isotopes of hydrogen?

a)1 b) 2 c) 3 d)4

Q8. Organisation who decided boiler standardisation

a) IBR b) BS c) ASME

Q9. Purpose of sprue

a) to take molten metal from basin to gate

Q10. Basic shaft basis

A) upper deviation Zero

Q11. PCD of involute profile gears depends upon:

a) pressure angle b) its an element helps in manufacturing

Q12. Unit of power in SI units

a) watt

Q13. Value of G

a) 6.66 X 10^-11

Q14. True centrifugal casting.

and soo on.

Aptitude:

1. What is the currency of china

a. yuan b. dollar c. euro
2. What is minimum gap between tow session of parliament.
a. 3 month b. 6 month c. 12 month d non of these

3. Who got the Rajiv Gandhi khel rattan 2010
a. abhinav bindra b. seina nehwal c. vishawa Nathan

Choose the synonyms of the following.

4. PIQUANT

5. CLANDESTINE

6. OBDURATE

Find the next terms of the series
8. 5,17,37,65,?..,145
a. 95 b. 101 c. 107

9. 5, 1.5, 4.5, 13.5?????
a. 40.5 ans

10. 3, 11, 19, 35, 51, 75??..
a. 91 ans

11. P man can do a work in the day. In how many day np man do this work and times
a. tm/n ans

They given on passage with 5 Questions
One data interpretation with 3 Questions

Ten Questions from data sufficiency like is two consecutive no. p>q
1. p+q=odd 2. p.q=even

Second part is technical in they give very simple Questions

1 Full form of MIUs
a. Million instructions per unit ans

2. ~ ~A
a. A b. ~A c. 0 d. 1

3. ~A(A+1)
a.0 b .A c. ~A d. ??

4. (A+B)`
a. A`.B`ans

5. Which of the following language platform independent
a. java

6. Which is the typical error
a syntex error b. semantic error c. run time error

7. Cache memory

is which type of memory?

8. Magnetic Flux is measured by which meter?

Ans: Fluxmeter

9. If diagonal of square is increased by 30% then how many % increases in area?

a) 69%

10. Which country is allow for wolf hunting after 45 years ban?

Ans: SWEDEN

11. Ellero is temple of

Ans: Buddist, Hindu, jain

 

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