MOCK EXAM: Aircraft Power Plant Welcome, You are about to take up the MOCK EXAM: Aircraft Power Plant. Please take note of the following before you take the assessment. This assessment is timed for 120 Mins and auto submit. Scores and correct answer will be displayed after taking up the assessment. You can only take the assessment twice so make sure you have a strong internet connection. All questions are required to have an answer. This assessment is composed of 30 items multiple choice type of question. Always remember: THINK, CHECK AND SUBMIT. If you have any concern, please feel free to contact us. E-mail Address: assessment@flightwingsaviation.com Facebook Page: www.facebook.com/flightwingsaviation GOODLUCK! Email Adress LMS USERNAME FULL NAME CLASS SECTION/SCHEDULE (FRI-AM, FRI-PM, SAT-AM, SAT-PM, SUN-AM, SUN-PM, ONLINE) 1. If a firefly collides with the windshield of a fast-moving bus, which statement is correct? a) The firefly experiences an impact force with a larger magnitudeb) The bus experiences an impact force with a larger magnitudec) The firefly and bus experience forces with same directiond) The firefly and bus experience forces with same magnitude A B C D None 2. A heavy weight is supported by two cables that exert tensions of magnitude T1 and T2. Which statement is correct? a) T1 = T2b) T1y = T2yc) T1 < T2 d) T1 > T2 A B C D None 3. The tension in a string from which a 4.0-kg object is suspended in an elevator is equal to 44 N. What is the acceleration of the elevator? a) 11 m/s2 upwardb) 1.2 m/s2 upwardc) 1.2 m/s2 downwardd) 10 m/s2 upward A B C D None 4. What is the smallest value of the force F such that the 2.0-kg block will not slide down the wall? The coefficient of static friction between the block and the wall is 0.2. a) 98 Nb) 20 Nc) 10 Nd) 4 N A B C D None 5. In a game of shuffleboard (played on a horizontal surface), a puck is given an initial speed of 6.0 m/s. It slides a distance of 9.0 m before coming to rest. What is the coefficient of kinetic friction between the puck and the surface? a) 0.20b) 0.18c) 0.15d) 0.13 A B C D None 6. A B C D None 7. A 3.0-kg block slides on a frictionless 20° inclined plane. A force of 16 N acting parallel to the incline and up the incline is applied to the block. What is the acceleration of the block? a) 2.0 m/s2 down the inclineb) 5.3 m/s2 up the inclinec) 2.0 m/s2 up the inclined) 3.9 m/s2 down the incline A B C D None 8. If F = 40 N and M = 1.5 kg, what is the tension in the string connecting M and 2M ? Assume that all surfaces are frictionless. a) 13 Nb) 23 Nc) 36 Nd) 15 N A B C D None 9. A B C D None 10. A roller-coaster car has a mass of 500 kg when fully loaded with passengers. At the bottom of a circular dip of radius 40 m (as shown in the figure) the car has a speed of 16 m/s. What is the magnitude of the force of the track on the car at the bottom of the dip? a) 3.2 kNb) 8.1 kN c) 4.9 kNd) 1.7 kN A B C D None 11. An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the plane were to fly in the same 1000 m circle at a speed of 300 m/s, by what factor would its centripetal acceleration change? a) 0.25b) 0.50c) 1.00d) 2.00 A B C D None 12. If the coefficient of static friction between the tires and road on a rainy day is 0.5, what is the fastest speed at which a car can make a turn with a radius of 80.0 meters? The road is flat. a) 7 m/sb) 11 m/sc) 14 m/sd) 20 m/s A B C D None 13. A boy on board a cruise ship drops a 30.0 gram marble into the ocean. If the resistive force proportionality constant is 0.50 kg/s, what is the terminal speed of the marble in m/s? a) 0.06b) 0.294c) 0.588d) 60.0 A B C D None 14. An object moving at constant velocity in an inertial frame must: a) have a net force on itb) eventually stop due to gravityc) not have any force of gravity on itd) have zero net force on it A B C D None 15. Acceleration is always in the direction: a) of the displacementb) of the initial velocityc) of the final velocityd) of the net force A B C D None 16. The inertia of a body tends to cause the body to: a) speed upb) slow downc) resist any change in its motiond) fall toward earth A B C D None 17. Equal forces F act on isolated bodies A and B. The mass of B is three times that of A. The magnitude of the acceleration of A is: a) three times that of Bb) 1/3 that of Bc) the same as Bd) nine times that of B A B C D None 18. A brick slides on a horizontal surface. Which of the following will increase the magnitude of the frictional force on it? a) putting a second brick on topb) decreasing the surface area of contactc) increasing the surface area of contactd) decreasing the mass of the brick A B C D None 19. Why do raindrops fall with constant speed during the later stages of their decent? a) The gravitational force is the same for all dropsb) Air resistance just balances the force of gravityc) The drops all fall from the same heightd) The force of gravity is negligible for objects as small as raindrops A B C D None 20. A ball is thrown upward into the air with a speed that is greater than terminal speed. On the way up it slows down and, after its speed equals the terminal speed but before it gets to the top of the trajectory: a) its speed is constantb) it speeds upc) it continues to slow downd) its motion becomes jerky A B C D None 21. A 60 kg crate is pulled across a level floor via a horizontal rope. The coefficient of kinetic friction between the crate and the floor is 0.4, and the coefficient for static friction is 0.5. Find the acceleration of the crate if the rope has tension 500 N IN m/s/s? a) 4.3b) 4.4c) 4.5d) 4.6 A B C D None 22. A flatbed truck slowly tilts its bed upward to dispose of a 95.0kg crate. The bed is raised to an angle of 25° and the crate begins to slide. If the coefficient of kinetic friction between the bed of the truck and the crate is 0.3, what is the acceleration of the crate? a) 1.3b) 1.4c) 1.5d) 1.6 A B C D None 23. Calculate the kinetic energy of a body which has a mass of 5 kg and a velocity of 10m/s. a) 260 Jb) 250 kJc) 260 kJd) 250 J A B C D None 24. Calculate the increase in internal energy of a gas in a closed system during a process in which -100 J of heat transfer and 400 J of work transfer take place. a) 300 Jb) 300 kJc) 200 Jd) 200 kJ A B C D None 25. During an expansion process, the pressure of a gas changes from 15 to 100 psia according to the relation P= aV + b, where a= 5 psia/ft3 and b is a constant. If the initial volume of the gas is 7 ft3, calculate the work done during the process. a) 181 Btub) 18.1 Btuc) 1.81 Btud) 0.181 Btu A B C D None 26. A mass of 2.4 kg of air at 150 kPa and 12°C is contained in a gas-tight, frictionless piston–cylinder device. The air is now compressed to a final pressure of 600 kPa. During the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. Calculate the work input during this process. a) 2720 kJb) 272 kJc) 27.2 kJd) 2.72 Kj A B C D None 27. An ideal gas at a given state expands to a fixed final volume first at constant pressure and then at constant temperature. For which case is the work done greater? a) Considering the area under the process curve, and thus the boundary work done, both are equal.b) Considering the area under the process curve, and thus the boundary work done, is greater in the constant volume case.c) Considering the area under the process curve, and thus the boundary work done, is greater in the constant pressure case.d) Considering the area under the process curve, and thus the boundary work done, is greater in the constant temperature case. A B C D None 28. A rigid tank contains air at 500 kPa and 150°C. As a result of heat transfer to the surroundings, the temperature and pressure inside the tank drop to 65°C and 400 kPa, respectively. Determine the boundary work done during this process. a) 0 kJb) 1 kJc) 2 kJd) 3 kJ A B C D None 29. A frictionless piston–cylinder device contains 10 lbm of steam at 60 psia and 320F. Heat is now transferred to the steam until the temperature reaches 400F. If the piston is not attached to a shaft and its mass is constant, determine the work done by the steam during this process a) 100.4 Btub) 96.4 Btuc) 90. 4 Btud) 93. 4 Btu A B C D None 30. What is the meaning of “specific heat”? a) The specific heat is defined as the energy required to raise the volume of a unit mass of a substance by one degree.b) The specific heat is defined as the energy required to raise the pressure of a unit mass of a substance by one degree.c) The specific heat is defined as the energy required to raise the temperature of a unit mass of a substance by one degree.d) The specific heat is defined as the energy required to raise the energy of a unit mass of a substance by one degree. A B C D None 1 out of 3
