Quiz 16

Q1 // Choose the correct answer: 1- A fluid is one which can be defined as a substance a) Has some shear stress at all points. b) Can deform indefinitely under the action of the smallest shear force. c) Has the small shear stress in all directions 2- What is mean by an incompressible fluid? a) Density change with pressure. b) Density does not change with pressure. c) Neither a. or b. 3- A piemeter is used to measure positive gauge pressure of liquid and only limited to low pressure measurement a) b) c) True. False. Neither a or b. 4- The correct water pressure (ywater 9810 N/m') at a depth of 10 m in a tank is open to atmosphere is 98100 K pa gage 98100 pa gage 9.81 pa gage a) b) 5- Which is the expensive device for measuring flow/discharge rate Venturi meter a) b) c) Pitot tube Orifice meter

In a police investigation of tyre marks, it was concluded that a car while in motion along a straight level road had skidded for a total disțance of 50 m. after the brakes were applied. If the coefficient of friction between the tyres and the pavement is estimated as 0.50 and g = 9.8 m/s?, the probable speed of the car, just before the brakes were applied would be f 45 km/h 3) 62.5 km/h 2) 79.70 km/h 4) .98 km/h

5) A particle is dropped from a height of 100 m. Determine the time required for the particle to fall if i) we neglect air resistance and ii) we include air resistance - a = g-0.001v². ANS. Without air resistance, t = 4.518 sec With air resistance, t = 4.593 sec

Home C Digital Systems: Fro... w Home Workday in Sign In to LinkedIn Registration M Gmail 9 fourier transt Mechanical Engineering (8) Weight of a and Bare 55 lb and 30 lb respectively. Find the acceleration of block A. 50 lb 250 a) 9.63ft/s2 b) 9.73 ft/s2 c) 8.63 ft/s2 d) 781 ft/s2

2. Both a gage and manometer are connected to a gas tank to measure its pressure. If the reading on the pressure gage is 80 kPa. The distance between the two fluid levels of the manometer h is if the gage fluid in the manometer is a mercury (s =13.6) ; and h is if the gage fluid in the manometer is water. c) 6.213m; 0.7626 m d) 4.91m: 0.668m a) 0.4 m: 9m b) 0.9m; 4.3 m P- 80 kPa 3. A 50 ton, 6-m diameter hemispherical dome on a level surface is filled with water as shown in figure. An engineer claims that be can left this dome by attaching a long tube to the top and filling it with water. So, the required height ol water h in the tube to lift the dome is the weight of the rube and water therein. . Ignore a) 0.47 m b) 7.4 m c) 3.765 m d) 0.935 m

2) a) A container filled with water (p= 1000 kg/m³) sits on a scale. The scale shows a reading of 15.0 N. Afterward, a weight with a mass of 0.2 kg and a volume of 2.35 × 10-5 m³ is submerged in the water without any water spilling out. Neither the weight nor the string it hangs from is in contact with the container or the scale. Refer to the figure on the next page. b) What does the scale show when the weight is freely suspended in the water? c) What does the scale show when the weight is lowered to the bottom of the container? Fo THE

Help with the questions: 1- Continuity tells us that whatever the volume of fluid in a pipe passing a particular point per second, the same volume must pass every other point in a second. The fluid is not accumulating or vanishing along the way. A) True B) False 2- When a fluid moves from a wider area of a pipe to a narrower one, its speed increases. A) True B) False 3- A fluid exerts a net upward force on any object it surrounds, called the buoyant force. A) True B) False

19) Fatigue test results of a material are shown in the diagram. a) Estimate the ultimate static strength of this material b) Estimate the fatigue (endurance) limit. c) If this test specimen has a cross-sectional area of 14 cm² and subjected to a maximum repeated load of 2800 kg over it, after how many repetitions will it fail? d) Determine the fatigue strength at 1000 cycles o (kgf/cm³) 500 400 300 200 100 0 1 2 3 4 5 6 7 log1o N

Where does the value of the Rin the solution came from?

Questions d) e) f), please provide full solution

A spherical neutrophil 16µm in diameter is resting as shown in the attached photo. The pressure difference between the inside and outside of the cell is 7.5Pa. a) Draw free body diagrams of the whole cell and one hemisphere of the cell. b) Calculate cortical tension in the cell. In a micropipette aspiration experiment, a suction pressure of 52.5 Pa was used to aspirate the neutrophil membrane. c) Draw free body diagrams of the whole cell under micropipette aspiration and the portion of the cell in the micropipette. What is the diameter of the micropipette tip used to make this hemispherical projection? Next, the micropipette aspiration was stopped, and the cell was treated with Cytochalasin D, an inhibitor of actin polymerization, causing the cortical tension to decrease by half. d) Assuming the pressures inside and outside the cell have not changed, what is the new cell radius? e) If the same micropipette was used to aspirate the cell, what would be the new suction pressure?

C 4 m 400 N/m 8 cm 2 cm A 8 cm -2 cm 2 cm B D

ا من ۱ A ball of weight 120 N rests in a right angled groove as shown in Fig. The sides of the groove are inclined at an angle of 30° and 60" to the horizontal If all the surfaces are smooth, the reaction R, is given by V. TT 120 N 30° B 60° 1) 60 N 3) 30 N 2) 120 N 4) 103.92 N temeter 100 cm Ganessh G@NU 20:14 äc luJI 21.03.11 ...

of Four containers whose walls are made up Shiny metal, Dull metal, shiny black and Dull black respectively are filled with warm water at the same temperature and kept in the same ambient. After 10 minutes which container will have the coolest water a) Shiny metal c) Dull black b) Shiny black d) Dull metal

A ball dropped from the rooftop of a building takes 2.0 s to reach the ground. What is the height of the building? A 19.6 m B) 39.2 m 1.9 m D 9.8 m

2. Both a gage and manometer are connected to a gas tank to measure its pressure. If the reading on the pressure gage is 80 kPa. The distance between the two fluid levels of the manometer h is if the gage fluid in the manometer is a mercury (s =13.6); and h is if the gage fluid in the manometer is water. a) 0.4 m ; 9m b) 0.9m; 4.3 m c) 6.213m; 0.7626 m d) 4.91m; 0.668m P- 80 kPa A=?

2. Both a gage and manometer are connected to a gas tank to measure its pressure. If the reading on the pressure gage is 80 kPa. The distance between the two fluid levels of the manometer h is if the gage fluid in the manometer is a mercury (s =13.6) ; and h is if the gage fluid in the manometer is water. a) 0.4 m; 9m b) 0.9m; 4.3 m c) 6.213m; 0.7626 m. d) 4.91m; 0.668m

C )Write the effects of three different riders on the bicycle. Acceleration, deceleration, torque etc. Please review. * 3 riders will use the bike and their weights are: 60, 80, 100 kg. The bike will reach a maximum speed of 25 km/h for a person of 80 kg * The gravitational force is 9.8 m/s2. The motor to be used will be a DC motor, three users will use the same bicycle and a single bicycle will be designed. * * The battery to be used is large and strong enough to provide these bike features. The weight of the bike is 25 kg. The diameter of the wheel is 1m. * The following method will be used while designing. 37° 53°

QUESTION 10 This question is about springs and oscillations. A mass of 10 kg is attached to two springs in series as shown in Figure Q10. One of the springs has a stiffness of 2 kN/m. What must the other spring's stiffness be for the mass to oscillate at one cycle per second? 2 kN/m 10 kg Figure Q10 a) 492 N/m b) 942 N/m c) 1.32 kN/m d) 1.89 kN/m e) No answer

Voltage E = 220 V ± 1% and resistance R = 22 W ± 0.5% were measured in an electrical circuit with measuring devices. What is the uncertainty in calculating the electrical power expressed as P = E2 / R? A)%2.45 B)%2.53 C)%2.24 D)%2.35 E)%2.64

A car company get its engines manufactured from three countries A, B, and C. Percentages of engines produced by the three countries A, B, and C are 40%, 35%, and 25% respectively. It is known that 2% of the engines from A, 3 % of the engines from B, and 1% of the engines from C have emission problem (E). Engines are all mixed and in the warehouse. One engine is selected randomly. a) What is the probability that the engine selected has emission problem? b) If the engine does not have emission problem, what is the probability that it came from country B? c) If the engine has emission problem, what is the probability that it was not produced by the country C?

Suppose that P1 = 5.6 kN and P2 = 4.2 kN  Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension.  a) FGF  b) FCF  c) FCD

Course dashboard o A 140 g mass on a 2.5 m-long pendulum string is pulled 8° to one side and released. What is its velocity when it reaches 4° on the opposite side? A) 0.025 m/s B) 0.158 m/s C) 0.358 m/s D) 0.598 m/s E) 0.866 m/s Lutfen birini seçin: O A O B O D O E ASUS Model No:K53 F4 F10 F12 CHO Pause Break 96 & 2$ 5 1/2 9. R Y U 1O Ğ D G B Alt Gr I\

The specific heat value, universal gas constant and specific gas constant has the same unit. Is it true or false?       A)True       B)False

Materials science Q1 ) materials engineers develop new techniques and systems to treat the existing materials and produce new products. A)True B) False Q2) For a certain crystallographic vector, the antiparallel one has same index number and signs. A)True B)False

In an auto repair service, a hydraulic platform raises a 1800kg car 1.6m. The hydraulic pump maintains constant pressure of 950kPa in its piston. How much volume should the pump displace to deliver that amount of work? O A) close to 30L O B) close to 50L C) close to 55L D) close to 4OL O E) cdlose to 35L F) close to 45L

Fill in the unknown properties for the materials given below. PLEASE EXPLAIN THE CALCULATIONS YOU DID.

19 - Refrigerant 134a flows through two different pipes, forming a mixture. If the pressure of the mixture is 1.2 MPa and the enthalpy is 153.11 kJ/kg, which of the following is the degree of dryness?     a) 0.3074  B) 0.1348  NS) 0.1290  D) 0.2264  TO) 0.1857

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Q) When the patient is unconscious, the specialized doctor gives him nutrients through an intravenous solution, the density of which is 1.05 g/ml, through a vein in the arm. If the intravenous pressure gauge is 5.980 KPa, what is the minimum height that will allow the solution to enter the patient's vein? (Suppose that the viscosity of the solution is neglected). Ground acceleration m/s2 9.81 Glucose solution

12 In the given manometer system, there is 1 mole of He gas at 177 °C. When the temperature of this gas is increased to 627 °C, what is the difference in mercury levels in the manometer?     a) 5  B) 15  NS) 10  D) 25  TO) 50

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