ABSA 4th Part B

ABSA 4th Part B Chapter 1 Introduction to Power Engineering In the early days, owners of power plants hired _____ workers, who started out doing manual labour and through acquired experience they were promoted to jobs with gradually increasing levels of skill. a. Qualified b. Highly educated c. Trained d. Unskilled e. College trained. d Early government involvement in certification of power engineers became more important for the following reasons except: a. Efficiency b. Labour mobility c. Safety d. Pollution e. Technological advancements. d Which of the following is not a definition of a power plant? a. Any one or more boilers in which steam or other vapour is generated at more than 103 kPa. b. Any one or more boilers containing liquid and having a working pressure exceeding 1100 kPa. c. Any one or more boilers containing liquid and having a working temperature exceeding 121°C. d. Any one or more boilers in which steam or other vapour is generated at less than 57 kPa. e. Any engine run from one or more boilers containing liquid and having a working pressure exceeding 1100 kPa. d Committees that establish standards are composed primarily of which of the following elements? a. Only experts from the industry and government b. One government appointed standards board c. Experts from the industry, professional and insurance groups and all levels of government d. Only multi-National power corporations e. One independent safety and standardisation board. c A Fourth Class Power Engineer's certificate of competency qualifies the holder to take charge of the general care and operation of a power plant consisting of one or more coil type drumless boilers having an aggregate capacity of not more than _____ kW, when used for the sole purpose of underground thermal flooding in oil fields, as chief steam engineer. a. 1,000 b. 2,000 c. 3,000 d. 4,000 e. 5,000. e "Power plant" means any one or more boilers: a. In which steam or other vapour is generated at more than 103 kPa. b. In which steam or other liquid is generated at more than 103 kPa. c. Containing liquid and having a working pressure exceeding 1,200 kPa (160 psi), and temperature exceeding 121°C. d. Containing liquid and having a working pressure exceeding 1,200 kPa (160 psi), and a temperature not exceeding 121°C. e. Containing liquid and having a working pressure not exceeding 121°C. a In order to produce greater efficiency, higher boiler pressures were used and this led to _____ due to employing of unqualified operators in a power plant. a. Economic gains b. Serious accidents c. Higher efficiency d. Safer working conditions e. Less labour disputes. b A Fourth Class Power Engineer's certificate of competency qualifies the holder to take charge of a shift in a power plant consisting of one or more coil type drumless boilers having an aggregate capacity of not more than _____ kW, when used for the sole purpose of underground thermal flooding in oil fields, as shift engineer. a. 10,000 b. 20,000 c. 30,000 d. 40,000 e. 50,000. a Which of the following is not a common work schedule for power engineers? a. Year round employment b. Seasonal lay-offs c. Eight hour days d. Twelve hour days e. Rotating day and night shifts. b Which of the following duties is a holder of a Fourth Class Engineer's Certificate of Competency not qualified to perform? a. Take charge of a shift in a power plant having a capacity of more than 10,000 kW, as shift engineer. b. Take charge of the general care and operation of a power plant consisting of one or more coil type drumless boilers having an aggregate capacity not over 5,000 kW, when only in use for the purpose of subterranean thermal flooding in oil fields, as chief engineer c. Take charge of the general care and operation of a power plant having a capacity of not more than 1, 000 kW as chief steam engineer, and to supervise the engineers in that plant. d. Take charge of a shift in a power plant consisting of one or more coil type drumless boilers having an aggregate capacity of not more than 10,000 kW, when used only for underground thermal flooding in oil fields, as shift engineer a Which of the following certificates of competency qualifies the holder to take charge of the general care and operation of any power plant as chief steam engineer, and to supervise the engineers in that plant and take charge of a shift in any power plant as shift engineer? a. Third Class Engineer's Certificate of Competency b. Building Operator's Certificate of Competency c. Pressure Welder's Certificate of Competency d. First Class Engineer's Certificate of Competency e. Fireman's Certificate of Competency. d When oil mixes with water in the boiler the resultant effect is: a. Serious foaming b. Accumulation of very hard scale resulting in tube burnout c. Accumulation of soot d. Decrease in water level e. Shifting and loosening of baffles. a The holder of a Certificate of Competency, the classification of which authorises him or her to act as a engineer, may sketch, construct, install, operate, repair, and give advice on all things pertaining to any _____ in which that person is employed. a. Welding shop b. Automotive shop c. Power plant d. Fish plant e. Hydro plant. c In a power plant, the power engineer may function as a supervisor who directs others in the _____ operation on a shift. a. Simple an economical b. Welding and electrical c. Administrative and co-operative d. Production and receiving e. Safe and efficient. e Which of the following is required in order to progress to a higher certificate? a. Experience only b. Education, experience, and the next lower level certificate c. Hold the next lower level certificate only d. Both education and the next lower level certificate e. Education only. b In Alberta, the Safety Codes Act established the following classes of Power Engineer's certificates (other provinces and territories have also established the same structure for these certifications.) a. A, B, C, and D b. 1, 2, 3, and 4 c. First, Second, Third and Fourth d. Operators A, B, C and D e. Boiler maker first, second, third and fourth. c A Fourth Class Power Engineer's certificate of competency qualifies the holder to take charge of a shift in a power plant having a capacity of not more than _____ kW, as a shift engineer. a. 8,000 b. 9,000 c. 7,000 d. 6,000 e. 5,000. e Unqualified individuals operating a power plant or pressure plant risk the _____ of the plant and the general public. a. Health b. Comfort c. Resources d. Safety e. Economy. d The IAO is an organisation whose primary concern is: a. Lowering of maintenance costs through standardisation b. Lowering of production costs through increased automation c. Increase in equipment quality through tougher government regulation d. Lowering of insurance costs through standardisation e. Increase in safety awareness through public education. d A Fourth Class Power Engineer's certificate of competency qualifies the holder to take charge of the general care and operation of a power plant having a capacity of not more than _____ kW as chief steam engineer, and to supervise the engineers in that plant. a. 5,000 b. 4,000 c. 3,000 d. 2,000 e. 1,000. e In the early days, the following two agencies got involved in the certification of both power plant operators and equipment due to the many accidents that were caused by employing unqualified operators and improper use of equipment in power plants: a. Owners and governments b. Insurance underwriters and governments c. Educational institutions and owners d. Governments and educational institutions e. Owners and insurance underwriters. b Power engineers are: a. Safety code officers in a power plant automatically b. Qualified to perform any welding jobs in a power plant c. Skilled workers who operate and maintain the equipment in a power plant d. Qualified to perform any electrical jobs is a power plant e. Qualified to make design changes in a power plant. c Power engineers can usually expect to work: a. Straight 8 hour day shifts b. Straight 12 hour day shifts c. Straight 8 hour night shifts d. Straight 12 hour night shifts e. Rotating shifts. e Which of the following is not characteristic of increased automation in power plants? a. Computerised control station b. Increased mechanisation c. Manual flame checking d. Continuous monitoring of processes e. Continuous monitoring of costs. c Chapter 10 Forces and Moments A force of 320 kN acts at a perpendicular distance of 4 m from a point. What will be the turning moment produced? a. 80 kNm b. 1280 kNm c. 1280 kN d. 1280 kJ e. 1280 Nm. b A bar is pivoted on the left end and a force is applied upwards on the right end. The rotation of the bar will be: a. Clockwise b. Counter-clockwise c. Neutral d. Upward e. Downward. b In the diagram below, the bar will rotate in which direction? a. Clockwise b. Remain at rest because F is in the downward direction c. Remain at rest because no force is applied d. Remain at rest because forces are in equilibrium e. Counter-clockwise. a If a system is in equilibrium, then which of the following statements is true? a. The system will not rotate because the moments in the system balance each other out. b. The system will rotate counter-clockwise. c. The system will not rotate because no force is being exerted. d. The system will rotate under the largest force. e. The system will rotate clockwise. a A lever 10 m in length is pivoted at one end and has a load of 900 kg suspended from the other end. What force must be applied at the midpoint of the lever to obtain equilibrium? a. 8829 N b. 17,658 N c. 882.9 N d. 4414.4 N e. 22,500 N. b A lever 15 m in length is pivoted at one end. A load of 750 N is suspended from the other end. What force must be applied at the midpoint of the lever in order to obtain equilibrium? a. 50 N b. 112.5 N c. 150 N d. 1,500 N e. 1.725 N. d A 12 m long bar is pivoted on the right end and a force of 150 N is applied upwards on the left end. The moment of force is: a. 12.5 Nm b. 25 Nm c. 180 Nm d. 1800 kNm e. 1.8 kNm. e A bar is pivoted on the right end and a force is applied upwards on the left end. The rotation of the bar will be: a. Clockwise b. Counter-clockwise c. Neutral d. Upward e. Downward. a A lever is 3 m in length and is pivoted at one end. A load of 8000 N is suspended from the lever at a point 1 m from the pivot. What force is necessary at the other end of the lever in order to obtain equilibrium? a. 2,666.667 N b. 1,333.333 N c. 16,000 N d. 24,000 N e. 5336 N. a A bar of negligible mass is supported at point p and loaded as shown in the diagram below. What direction would the bar rotate? a. No rotation b. Counter-clockwise c. Clockwise d. Upward e. Downward. b A 7 m bar is pivoted at 2 m from the left end. A force of 60 N is applied downwards on the left end and a force of 20 N is applied downward on the right end. What would be the clockwise and counter-clockwise moments and in which direction would the bar rotate? a. 80 Nm counter-clockwise, 100 Nm clockwise, counter clockwise rotation. b. 60 Nm counter-clockwise, 100 Nm clockwise, clockwise rotation. c. 120 Nm counter-clockwise, 100 Nm clockwise, counter clockwise rotation. d. 120 Nm counter-clockwise, 100 Nm clockwise, clockwise rotation. e. 120 Nm counter-clockwise, 120 Nm clockwise, equilibrium. c A 5 m long bar is pivoted on the right end and a force of 10 N is applied upwards on the left end. The moment of force is: a. 2 Nm counter-clockwise b. 2 Nm clockwise c. 50 Nm counter-clockwise d. 50 Nm clockwise e. 50 kNm clockwise. d Which of the following is the SI unit for force? a. m/s2 b. N c. ft lbs/s2 d. kg e. J. b A bar of negligible mass is supported on a fulcrum as shown in the diagram. What force (F) is required at the left hand side for equilibrium? a. 31.05 N b. 6.61 N c. 2.87 N d. 32.04 N e. 14.09 N. b An 8 m bar is pivoted at 5 m from the left end. A force of 15 N is applied downward on the left end and a force of 20 N is applied downward on the right end. What would be the clockwise and counter-clockwise moments and in which direction would the bar rotate? a. 60 Nm counter-clockwise, 75 Nm clockwise, counter-clockwise rotation. b. 60 Nm counter-clockwise, 75 Nm clockwise, clockwise rotation c. 75 Nm counter-clockwise, 60 Nm clockwise, clockwise rotation d. 75 Nm counter-clockwise, 60 Nm clockwise, counter-clockwise rotation. e. 60 Nm counter-clockwise, 60 Nm clockwise, equilibrium. d If a system of forces is in equilibrium, then which of the following statements is true? a. The system will rotate counter-clockwise b. The system will rotate clockwise c. The system will vibrate d. The total forces to the right equal the total forces to the left e. The system will rotate temporarily. d