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Power Engineering 3A1 Review 2 questions with complete solutions graded A+ 1 /
- A reinforced concrete beam requires a cross-sec- C tional area of reinforcing steel equal to 25 cm². If 2 cm diameter steel rods are used, how many will be required? Select one: A. 6 rods B. 7 rods C. 8 rods D. 10 rods E. 12 rods
- If melted, most substances: A Select one: A. Increase their volume B. Decrease their volume C. Retain their volume D. Increase, decrease or retain their volume, depend- ing on conditions E. Decrease in temperature
- The total amount of heat, in kJ, that is absorbed by A the water/steam in a boiler in a given period of time is called the: Select one: A. Heat rate B. Factor of evaporation C. Equivalent evaporation D. Total enthalpy E. Latent heat of the transformation
- Five kilograms of water at 100°C is changed to satu- C rated steam having a final temperature of 120°C. Cal- culate the total amount of heat required in changing the water to steam. Select one: A. 2287.26 kJ B. 2706.3 kJ
Power Engineering 3A1 Review 2 questions with complete solutions graded A+ 2 / C. 11,436 kJ
Power Engineering 3A1 Review 2 questions with complete solutions graded A+ 4 / vessels are constructed of B. Heat balance across the plant C. Volume of process products that will be produced across the plant
Power Engineering 3A1 Review 2 questions with complete solutions graded A+ 5 / D. Pressure, temperature, composition and flow rates of the various process streams E. Assurance that the mass of the materials is evenly distributed
- The absolute temperature equivalent of 30°C is: D Select one: A. -30 K B. 86°F C. 86°R D. 303 K E. 672°R
- Specialty steels for construction of bridges, boilers D and ships are refined in an oxygen furnace because: Select one: A. It reduces the time needed to produce the steel B. The high temperatures reduce the amount of alloy elements needed to strengthen the steel C. The high temperature produces steel with a very fine grain structure D.This method reduces impurities and gives the steel greater strength E. The slow operation gives advantages over other processes.
- Work done in a cylinder at constant pressure can be E defined using the formulas:
- Work Done (J) = Pressure (kPa) x Area (m²)
- Work Done (J) = Pressure (kPa) x Area (m²) x Dis- tance (m)
- Work Done (J) = Force (N) x Area (m²)
- Work Done (J) = Force (N) x Distance (m) the force moves Select one: A. 1, 2
Power Engineering 3A1 Review 2 questions with complete solutions graded A+ 7 /
D. 1, 3
E. 2, 4
- A packaged boiler is to be unloaded from a flat car. D The bed of the flat car is 2 m above the ground. What length of skids is necessary if the skids are to make an angle of 25 degrees with the ground? Select one: A. 2.21 m B. 3.12 m C. 4.29 m D. 4.73 m E. 5.73 m.
- Into how many components can a single vector be C resolved? Select one: A. None B. One C. Two D. Four E. Unlimited
- An equation is a statement of: E Select one: A. Multiplication. B. Division. C. Squaring. D. Addition. E. Equality.
- If four plates of identical physical dimensions are C subjected to the same temperature difference, the one made of which material will conduct the most heat? Select one:
Power Engineering 3A1 Review 2 questions with complete solutions graded A+ 8 / A. Aluminum B. Brass C. Copper
Power Engineering 3A1 Review 2 10 / C. Conduction D. Specific heat E. Sublimation
Power Engineering 3A1 Review 2 11 /
- The force that is equal in magnitude but opposite in D direction to the resultant force is called the: Select one: A. Component B. Element C. Displacement D. Equilibrant E. Impedance
- If A = Àr ² solve for 'r': C Select one: A. ÀA() B. (ÀA)/ C. (AÀ/) D. A²À E. AÀ².
- Given that one side of a triangle is equal to 8 m, the E base is equal to b m and trhe height is 4 m, the area of this triangle is equal to: Select one: A. 16 m² B. 32 m² C. 8b m² D. 4b m² E. 2b m²
- A steel tube is 8 m long, and has a net cross sectional C area of 0.002 m². It hangs vertically with a load of 500 Kg at its lower end. If the modulus of elasticity is 210 x 10³ MPa, find the extension of the tube. Select one: A. 0.0117 m B. 0.0117 cm C. 0.093 mm
Power Engineering 3A1 Review 2 13 / Salts present in the moisture in the air and on the surface of the material that is being corroded will:
- Increase the corrosion rates of that material
- Decrease the corrosion rates of that material
- Cause a neutralizing film to form on the surface of the material
- Increase the current carrying capacity of the water on the surface of the material Select one: A. 1, 2 B. 2, 3 C. 3, 4 D. 1, 3 E. 1, 4
- If the allowable working stress and the ultimate B strength of a material are known, we can find the safety factor by: Select one: A. Subtracting the allowable working stress from the ultimate strength B. Dividing the ultimate strength by the allowable working stress C. Dividing the allowable working stress by the ulti- mate strength D. Dividing the difference between the allowable working stress and the ultimate strength into the ul- timate strength E. Multiplying the ultimate strength by the allowable working stress
- Rearranging an equation to isolate the unknown is D called: Select one: A. Isolating. B. Interpolating. C. Squaring.
Power Engineering 3A1 Review 2 14 / D. Transposing. E. Solving.
Power Engineering 3A1 Review 2 16 / Test Select one: A. 1, 2
Power Engineering 3A1 Review 2 17 /
B. 2, 3
C. 3, 4
D. 1, 3
E. 2, 4
- The P&ID shows: B Select one: A. Less detail than the PFD B. More detail than the PFD C. The same amount of information as the PFD but in a more logical format D. Completely different information than the PFD shows E. The costs and suppliers of the materials
- Given P1V1• = P2V2• , find 'n' if P1 = 1.08 kPa, V1 = 2.1 5 D m³, P2 = 12.43 kPa and V2 = 0.35 m³. Select one: A. 11. B. 1. C. 3. D. 1. E. 1.
- The moment of a force about a point is: D Select one: A. The component that will bring the system to equi- librium B. The force multiplied by the resultant C. The force multiplied by the equilibrant D.The force multiplied by the perpendicular distance between the force and the pivot point E. Equal to time multiplied by the force
- A ladder 7.5 m long leans against a wall, and is in- D clined at 70 degrees to the ground. How far from the
Power Engineering 3A1 Review 2 19 / C. 3.57 m D. 2.57 m E. 1.97 m.
- Determine the total latent heat required to produce B 2.3 kg of dry, saturated steam at a pressure of 350 kPa absolute. Select one: A. 6284.5 kJ B. 4940.6 kJ C. 2148.1 kJ D. 1649.9 kJ E. 1343.9 kJ
- Material Balances are usually shown in terms of C moles per unit of time because: Select one: A. These units are easy to use in mathematical calcu- lations B. These units are accepted by ASME and other engi- neering standards as the only universally recognized units C. A mole of a substance will not change regardless of the phase, pressure or temperature D. The mole measurement of a substance converts easily to both SI and Imperial units E. The mole is not used in the Imperial system of measurement
- A tank is 8 m long, 6 m wide and is filled to a depth of 8
A
m with gasoline. Density of the gasoline is 672 kg/m³. Determine the pressure at the bottom of the tank. Select one: A. 52.74 kPa B. 53.76 kPa
Power Engineering 3A1 Review 2 20 / C. 403.2 kPa D. 527.4 kPa E. 624.3 kPa
- B
