Nalco Interview Questions

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