Nse Past Questions and Answers [1]

The Nigerian Society of Engineers 2007

Professional Examinations May,

1. A rotameter, through which air at room temperature and atmospheric pressure is flowing, gives a certain reading for a flow rate of 100 cc/s. If helium (Molecular weight 4) is used and the rotameter shows the same reading, the flow rate is A. 26 cc/s B. 42 cc/s C. 269 cc/s D. 325 cc/s 2. A suspension of uniform particles in water at a concentration of 500 kg of solids per cubic metre of slurry is settling in a tank. Density of the particles is 2500 kg/m3 and terminal velocity of a single particle is 20 cm/s. What will be the settling velocity of suspension? Richardson – Zaki index is 4.6. A. 20 cm/s B. 14.3 cm/s C. 7.16 cm/s D. 3.58 cm/s 3. Air enters an adiabatic compressor at 300 K. The exit temperature for a compression ration of 3, assuming air to be an ideal gas (= CP / CV =7/5) and the process to be reversible, is. A. 300(32/7) B. 300(33/5) C. 300(33/7) D. 300(35/7) 4. Dilute sulphuric acid is handled in vessels made of: (GATE –1989– 9.i.a) A. stainless steel. B. brass. C. lead. D. cast iron. 5. Which of these terms apply to identifying quality standards and how to satisfy them? A. quality projection B. quality management C. quality planning D. quality overview. 6. Which of the following definitions apply to the cost of qualify? a. left over product B. total cost of all project efforts C. customer satisfaction D. redoing entire project. 7. If the replacement of a piece of equipment is being considered, then the cost of extending its services for another one year is affected by all of the under listed factors except A. salvage value at the end of five more years. B. initial investment. C. annual operating expenses. D. minimum attractive rate of returns. 8. Lim

x3  1 2 x 2  80 x  1

x →∞ A. 0.

B. ½

C. 1

D. ∞

The Nigerian Society of Engineers

Professional Examinations May, 2007

9. The annual gross revenue from the sales of a particular product is N 700, 000.00. The variable manufacturing costs are 60% of the annual gross revenue and the fixed cost per year is N160, 000.00. The annual profit is A. N 420, 000.00. B. N 120,000.00 C. N 280,000.00 D. N 500,000.00 10. All engineering projects must be preceded by A. environmental impact assessment. B. energy input assessment. C. energy usage assessment. D. environmental, energy assessment consideration. 11. Technology can be defined as A. science, engineering and development. B. application of one's knowledge for development. C. science of production D. information techniques and tools with which people utilize their environment to satisfy their needs. 12. PERT stands for A. Programme Evaluation and Review Techniques. B. Programme Estimate and Reporting Techniques. C. Process Evaluation and Reporting Techniques. D. Process Estimate and Review Techniques. 13. Which of the following are important for the proper interface of a DTMF generator to a telephone line? (i) Impedance A. (i) and (ii) only C. (i) and (iii) only 14.

(ii) Loop current (iii) Tone impedance B. (ii) and (iii) only D. (i), (ii) and (iii)

In the method of symmetrical components, a three phase unbalanced system of voltages can be represented by one of the following among others A. balanced 3 – phase system in the usual R – Y – B sequence. B. balanced 3 – phase system in a reversed R – B – Y sequence. C. a system of three phasors of equal phase revolving in the positive phase rotation. D. a system of three phasors, equal in magnitude only and revolving in the positive phase rotation.

15. Six messages with the probabilities 1/4, 1/4, 1/8, 1/8 and l/8 of occurrence, can be accommodated by a single communication channel; the entropy, in Bits per message, of the system is A. 0.25 B. 0.52 C. 2.50 D. 5.20

The Nigerian Society of Engineers

Professional Examinations May, 2007

16. It is a consequence of the Maxwell – Boltzman distribution law that A. the most probable particle velocity increased with temperature B. there is a lower limit to the velocity of a molecule at any temperature. C. on the average, the speed of molecules in a gas is proportional to temperature. D. the mean free time of an electron in a metal is proportional to temperature. 17. When an electron enters a uniform electric field at an acute angle, its trajectory is A. rectilinear. B. elliptical. C. parabolic. D. circular. 18. Electrical angle in a p – pole machine is related to mechanical angle by A.  e 

120 m P

B.  e



P m 2

P 2

C. m   e

120 e D.  m  P

19. Five key words in the stages of statistical investigation of numerical data are A. interpretation, presentation, analysis, organisation and collection. B. collection, presentation, analysis, organisation and interpretation. C. collection, organisation, presentation, analysis and interpretation. D. presentation, analysis, collection, organisation and interpretation. 20. The following are the causes of project failure except: A. availability of energy supply and water. B. the act of indiscipline, dishonesty. C. most businesses are not capable of attracting financial institutions to support project D. lack of attitude top quality assurance.

The Nigerian Society of Engineers

Professional Examinations May, 2007

MAY, 2007 SOLUTIONS TO OBJECTIVE QUESTIONS. 1. C 2. C 3. A 4. C 5. C 6. B 7. B 8. D 9. B 10. A 11. B 12. A 13. C 14. B 15. A 16. C 17. A 18. B 19. C 20. A

The Nigerian Society of Engineers 2006.

Professional Examinations APRIL,

1. One of the models used for the depreciation of engineering assets is the A. accelerated cost recovery system. B. sum of year – straight line depreciation model. C. accelerated declining balance depreciation model. D. sum of year digits double declining balance depreciation model. 2. If y = 3x2, find dy / dx. A. 6x B. 9x

D. 9 x2

C. 12x

3. Standard generating sets cannot be used to power computers and other digital electronics equipment because A. unburnt fuel washes past the piston rings and mixes with sump oil. B. of the relatively long delay between main failures and starts up. C. of the existence of a short break on change over. D. they fail to reach efficient running temperatures which causes excessive piston wear. 4. The Laplace transform of the unit step function f (t) is given by C. 1 / s2

D. F(s)

5. The first Nigerian engineer qualified in A.1893 B. 1930 C. 1820

D. 1935

A. 1

B. 1 / s

6. A non – technical disaster is a A. radioactive accident. B. collapse of a nuclear power station. C. cyclone. D. collapse building. 7. One of the options below is not an advantage of privatisation and deregulation of government owned businesses. A. optimal allocation of resources. B. increase in supply of goods and services. C. loss of job D. competition.

The Nigerian Society of Engineers

Professional Examinations APRIL, 2006.

8. What does the Nigerian government intend to achieve through the on going sale of public corporations? A. Allow open market forces to drive the production of goods and services. B. Enable Political party members participate in running government firms. C. Allow foreign friends of the government officials participate in managing government firms. D. Allow foreigners manage these businesses sine Nigerian managers have failed. 9. The operation that takes place at sender’s ends of a communication channel is called A. modulation and demodulation. B. demodulation and Modulation. C. signal processing to enable faithful transmission and reception. D. protocol conversion to enable transmission 10. Which one of the following describes a communication Protocol? A. The rules and regulations by which devices on the network communicate. B. Correct exchange of information at both ends of a communication channel. C. The correct pattern for sending and receiving digital information over a channel. D. The correct pattern for sending and receiving analogue information over a channel. 11. Appropriate technology can be defined as A. the application of appropriate technology principles. B. a set of principles used for the implementation of appropriate technology. C. a set of techniques which makes optimum use of available resources in a given environment. D. a set of managerial activities used for actuating appropriate technology. 12. An elevator of mass 4800 kg is supported by a cable which can safely withstand a maximum tension of 60000 Newtons (N). The maximum upward acceleration the elevator can have is A. 5.0 ms –2

B. 2.5 ms –2

C. 7.5 ms –2

D. 10.0 ms –2

13. A matrix of the form 1

0

0

0

1

0

0

0

1

is called A. a square matrix. B. the identity matrix. C. a diagonal matrix. D. a rectangular matrix

The Nigerian Society of Engineers

Professional Examinations APRIL, 2006.

14. An airline company bought an aircraft equipment for N50, 000.00. The salvage value after 8 years useful life is N2, 000.00. Using the sum of the year's digits depreciation scheme, compute the book value after 2 years. A. N25, 000.00 B. N35, 000.00 C. N30, 000.00 D. N32, 000.00 15. According to Bernoulli's equation A. Z + P/W + V2/g = C B. Z + P/W+V2/2g = C C. Z – P/W + V2/2g = C D. Z – P/W + V2/g = C 16. The amount of time by which the activity completion can be delayed without interfering with the start of succeeding activity is known as A. earliest completion time. B. total float. C. free float. D. none of the above. 17. Evaluate (1 – j) 10, where j = – 1 A. 32 B. – 32j C. 16j D. – 24j. 18. Determine the normal force acting on the skier at point A, where his velocity is 20 m/s, weight = 60 kg and the radius of curvature, p, is 30 m.. A. 1368N

B. 1857N

C. 1386N

D.

1636N.

C. 2501N

D. 2801 N.

19. Determine the tension in the rope. A. 1801N

B. 2301N

20. One of these laws and theorems is not a fundamental one in Electrical /Electronics Engineering: A. Ohm's Law B. Thevenin's Theorem

C. Norton's Theorem

D. Archimedes’s.

The Nigerian Society of Engineers

Professional Examinations APRIL, 2006.

PART B: THE ENGINEER IN SOCIETY As a professional Nigerian engineer working in a mid-sized consulting engineering company. You have a young family and have recently purchased a house in a neighbour-hood that both you and your spouse have dreamed to own. Adjacent to your neighbourhood and quite close to your home is a vacant lot which has been designated for development. The developer is proposing a multi-storey mixed -use building. The local resident's association, of which you are the vice-chair, is strongly opposed to the development since it ii expected that it will have a negative impact on your quiet neighbourhood. You share the concern and head the drive to prevent the development. After a number of meetings with the Federal housing Authority, the developer and the resident's association, you learnt that your firm has been engaged by the developer to design a major component of the building. Your boss has asked you to manage this project. What are the ethical implications for you? What should you do?

The Nigerian Society of Engineers

Professional Examinations April 2006

APRIL, 2006 SOLUTIONS TO OBJECTIVE QUESTIONS. 1. A 2. A 3. C 4. B 5. A 6. C 7. C 8. A 9. A 10. A 11. C 12. B 13. B 14. B 15. B 16. C 17. A 18. C 19. C 20. D