PROBLEMI.2 A HYDRAULIC TURBINE IS REQUIRED TO PRODUCE 800 KW POWER AT 500 RPM UNDER A NET HEAD OF 40 M. FOR INITIAL TESTING A GEOMETRICALLY SIMILAR MODEL OF 1:4 SIZE NEEDS TO BE TESTED IN A LAB WHERE AVAILABLE HEAD IS 10 M.THE OPERATING SPEED AND POWER PRODUCED BY THE MODEL RESPECTIVELY IS
Q: A girl rolls a ball up an incline and allows it to return to her. For the angle and ball involved,…
A: Given data as per question Initial velocity of ball, u=3.81 m/sFinal velocity of ball,…
Q: Consider a two-stage cascade refrigeration system operating between -80 o C and 80 o C. Each stage…
A: Refrigerant is R13 Single stage vapor compression cycle Maximum temperature = 80 oC Minimum…
Q: R1: O 0.5 m RIV ly 1m B 1.5 kN 30° 2 kN/m, 1.5 m x R2y R₂=
A: Given:
Q: Please answer in 3 Decimal Places!
A: The link for the question is…
Q: A clutch is activated by ten helical springs symmetrically a spaced. Each spring consists of 10…
A:
Q: Find the moment caused by the force F = 719 about point C if a = 30, b = 34, m = 12, and n = 6.…
A:
Q: Water is supplied at a rate of 3000 litres per minute from a height of 4 metres to a hydraulic ram…
A:
Q: m₂ = 0.70 m₂ = 0.40 (a) 37° Stickman provides F Find F when: a) to break free. @ 20.kg b) to move…
A: (a) for break free ; Fapplied=f=μsmgcosθ=0.7×20×9.81×cos37°=109.7 N
Q: The disk rotates with the angular motion shown. The peg at B is fixed to the disk. Suppose that w =…
A:
Q: The driver of the truck has an acceleration of 0.45g as the truck passes over the top B of the hump…
A:
Q: Caleb left home and traveled toward the city A at an average speed of 64.7 km/h. Some time later,…
A: Given data: Speed of Caleb = vc = 64.7 km/h Speed of Kim = vk = 50.7 km/h Time of travel of Caleb =…
Q: from a vertica is found to be °C, all other p Nusselt numb
A: solution of given problem is below:
Q: 4 ft E D -3 ft- 6ft 2 ft 1 ft Determine the external support reactions at the pins A and D. The…
A:
Q: Dynamics of Rigid Bodies The rotation of the 0.9-m arm OA about O is defined by the relation Eq.…
A: Given: The length of the arm OA, L = 0.9 m The angular position of the arm OA, θ = 0.15t2 The…
Q: Consider a two-stage cascade refrigeration system operating between the pressure limits of 2 MPa and…
A: The vapor compression refrigeration cycle consists of four processes. Isentropic compression,…
Q: Interpret the following properties of brittle fracture and ductile fracture in terms of: Fracture…
A: Brittle fracture: The fracture of the material without plastic deformation (negligible plastic…
Q: Discuss the different types of aircraft gas turbine engines and their applications.
A: There are mention different types of aircraft gas turbine engines and its important applications.
Q: Q5: A centrifugal pump running at 900 rpm and delivering 0.3 m³/s of water against a head of 25 m,…
A:
Q: Required Information For a bar of AISI 1015 cold-drawn steel, determine the factor of safety using…
A: Given dataσA=28kpsiσB=15.5 kpsi``
Q: A thin rectangular polymer plate PQRS of width b = 429 mm and height a = 140 mm is shown in the…
A:
Q: (b) 2000 light bulbs were tested by the manufacturer. After 500 hours of testing, it was found that…
A:
Q: ump 3(b). Water flows through a spillway and goes through a hydraul Consider Flow rate Q= 15m³/s per…
A: given:water flow rate Q=15m3/swater depth Y1=0.6m
Q: The answers should not be in vector form. Please re-anser. Rate will be given
A:
Q: The rod OA rotates in the horizontal plane such that = 0.62t³ radian, and collar B is sliding…
A:
Q: A projectile is launched with a speed vo= 26.7 m/s from the floor of a 4.3-m-high tunnel as shown.…
A: given; projectile velocity(V0)=26.7m/sheigh of tunnel (h)=4.3mlaunch angle(θ)=?
Q: The ultimate shearing stress of the rivet used to join plates is 22 ksi. For a factor of safety of…
A:
Q: Generally, aircraft materials are required to be low density, excellent heat resistance and high…
A: Different alloys (except aluminum alloys) that are also used as aircraft materials is- Titanium…
Q: Part A Determine the angular velocity of the generator pulley B, measured clockwise Express your…
A: Given dataωA=90 rad/s rA=75mmrD=25mmrB=100mm
Q: (a) State the laws first law in the (b) The sliders A
A: Laws of Motion:- Newtons 1st Law of Motion:- It states that the body at rest or in uniform motion…
Q: wall having a thermal conductivity of vity 0.9 W/mK. If the heat rate is to b
A: given:thermal conductivity of composite structural k=0.3W/mKthickness t=100mmhermal conductivity of…
Q: Determine the estimated endurance strength in MPa to 1 decimal place for a hot rolled steel 17 mm…
A: Write the given data. Sut=650 MPaReliability=95%T=70 °CMotion=Rotationd=17 mm
Q: A steel tube having an outer diameter of 2.5 in. is used to transmit 10 hp when turning at 30…
A:
Q: Problem 3. Air at 20°C and 1 atm (p= 1.2 kg/m³ and u= 1.8×105 kg/(m-s)) flows at 3 m/s past a sharp…
A: (a) Calculate the Reynolds's number. Re=ρvLμ=1.2311.8×10-5=2×105<5×105so flow is laminar
Q: A SAE 1040 cold rolled shaft have a yield point of 70 ksi, a diameter of 60.4 mm, and with a key of…
A:
Q: A particle moves that is defined by the parametric equations given below (where x and y are in…
A: Given: Let us consider the given data, x=3t2-1y=t3-3t2+t-3t=2 sec Compute the radial component and…
Q: A square high-density polyethylene [a - 158x10-6/°C] plate has a width of 250 mm. A 150 mm diameter…
A:
Q: The normal strain in a suspended bar of material of varying cross section due to its own weight is…
A:
Q: Determine the magnitude of the pin force at A. Assume W = 875 lb, a = 4.3 ft, b = 3.3 ft, r = 9 in.…
A:
Q: The 185-lb man with center of gravity G supports the 83-lb drum as shown. Find the greatest distance…
A:
Q: Determine the angles made by the vector V = -13i+22j with the positive x- and y-axes. Write the unit…
A: Given:V=-13i+22j
Q: An aircraft skin panel that is part of a commercial airline is to be made from aluminium alloy…
A:
Q: re of 15,4 and 0.5 bar. Assuming ide
A: Given-Data:- p1 = 42 barT1 = 500°C=0.035 bar15 , 4 0.5 bar To-Determine:- a. The fraction of boiler…
Q: A particle moves in a straight line with a constant acceleration of 1.59 m/s2for 6s, zero…
A:
Q: "Prob. 10.3-5. A square, tubular steel column has the di- mensions shown in Fig. P10.3.5, has a…
A: Given:L=3 mP=50 KNEst=210GPaσy=250MPaa=150mmb=125mm
Q: A counter flow air pre-hea ter receives 330,000 lbs/hrs of flow gas at 509°F, for which Cp = 0.234…
A: Given data as per the question Temperature of gas=5090 F Cp = 0.234 Btu/(lbs °R), k=1.4 , kb =…
Q: A composite bar is fabricated by brazing aluminum alloy [E = 10,000 ksi] bars (1) to a center brass…
A:
Q: The two types of relays used to start hermetic compressorsare the _________ relay and the _________.
A: The hermetic compressor are the special type of compressors. These compressor are very big in size.…
Q: The design boiling point for most evaporator coils in residential air-conditioning is __________ °F.
A: Evaporator in the refrigeration process removes heat from the area which has to be cooled. The…
Q: As part of the maintenance routine on mechanical systems done by industries, discuss what is on-line…
A: Internet-based Surveillance In order to capture vibration data without human intervention, Vibration…
Q: The figure shows a bar in equilibrium position resting on the floor at point A and on the wall at…
A:
Step by step
Solved in 3 steps with 3 images
- For a high-fl ow site with a head of 45 ft, it is desired to designa single 7-ft-diameter turbine that develops 4000 bhp at aspeed of 360 r/min and 88-percent effi ciency. It is decidedfi rst to test a geometrically similar model of diameter 1 ft,running at 1180 r/min. (a) What likely type of turbine is inthe prototype? What are the appropriate (b) head and(c) fl ow rate for the model test? (d ) Estimate the powerexpected to be delivered by the model turbine.Example: A fan of diameter 0.7 m running 1500 rpm delivers 140 m3/min of air at 15C against 75 mm of water total pressure when the total effeciency is 86%. Determine the volume of air delivered, total pressure and power consumed, if (a) the air temperature is 50C. (b) the air temperature is 50C and the fan speed is 1700 rpm. (c) the same conditions as (b) but a 0.6 m diameter, geometrically similar fan is used.A Pitot tube at a height of 3 m, measures wind velocity 5.3 m/s. What is the wind velocity at a height of 50 m? If the center of a 45 m diameter wind turbine is placed at 50 m, what is the maximum power this turbine may produce?
- The cylinder bore diameter of a double-acting reciprocating pump is 160 mm and its stroke is 340 mm. The pump runs at 53 rpm and lifts water through a height of 29 m. The delivery pipe is 22 m long and 100 mm in diameter. Find (i) the theoretical discharge in liters/s,(ii) the theoretical power required to run the pump in kW, (iii) the percentage of slip, and (iv) the coefficient of discharge., if the actual discharge is 10 liters/s. Assume the weight density of water is 9810 N/m3A Kaplan turbine has the following specifications: H =25 ft., N=400 rpm; power = 650 hp. If the efficiency of the unit is 90%, estimate (a) the flow rate, (b) approxi-mate diameter of the runner, (c) turbine setting to avoid cavitation if the location is at sea level, and (d) turbine setting to avoid cavitation if the location of the unitis at an elevation of 5000 ft. The local temperature is 60°F.Ans: (a) Q=254 cfs; (c) Hs=5.8 ft.; (d) 0.12 ft.An electric utility decides to add 50 MW of wind generation to its system. If the individual units are to be rated at 2 MW in a 13-m/s wind at standard conditions and have efficiencies Cp = 0.32, ηm = 0.94, and ηg = 0.96, what is the required swept area of each rotor?
- A 1:10 model of a Francis turbine developed 0.5 kW under a head of 2.5 m at 480 rpm. The physical data are r1=1.5m, r2 = 0.4m, α1=15°, β2=135°. Find the speed of the prototype at a head of 20m.The dimensions of a Francis radial-flow hydroturbine are r2 = 2.00 m, r1 = 1.30 m, b2 = 0.85 m, and b1 = 2.10 m, where location 2 is the inlet and location 1 is the outlet. At the turbine inlet and outflow, the runner blade angles are β2 = 71.4° and β1 = 15.3°, respectively. The runner rotates at a rate of ń = 160 rpm. At design conditions, the volume flow rate is 80.0 m3 /s. (a) State the necessary assumptions and calculate the angle α2 at which the wicket gates should turn the flow (Figure Q1), with α2 measured from the radial direction at the runner inlet. (b) Calculate the swirl angle α1 (Figure Q1), where α1 is the angle measured from the radial direction at the runner output. (c) Calculate the needed net head and power output. (d) Discuss the actual power output and head required for actual case of the turbine (irreversibility not neglected). (Properties For water at 20oC, ρ = 998.0 kg/m3)A wind turbine rotates at speed of 300 rpm. What is the circumferential velocity at the tip of the blade if TSR is 2? If wind is at velocity of 7 m/s, what is the rotor radius to meet the required rpm?
- Consider the following H = 450 m, L = 5 km, D = 1.2 m, Dj = 20 cm.The penstock is concrete, ε = 1 mm. The impulse wheeldiameter is 3.2 m. Estimate (a) the power generated by thewheel at 80 percent efficiency and (b) the best speed of thewheel in r/min. Neglect minor losses.A rotating dishwasher arm delivers at 60 ° C to six nozzles,as in Fig.. The total fl ow rate is 3.0 gal/min. Eachnozzle has a diameter of 3/16 in. If the nozzle fl ows are equaland friction is neglected, estimate the steady rotation rateof the arm, in r/min.The cylinder bore diameter of a double-acting reciprocating pump is 170 mm and its stroke is 370 mm. The pump runs at 55 rpm and lifts water through a height of 26 m. The delivery pipe is 23.5 m long and 113 mm in diameter. Find (i) the theoretical discharge in liters/s,(ii) the theoretical power required to run the pump in kW, (iii) the percentage of slip, and (iv) the coefficient of discharge., if the actual discharge is 13 liters/s. Assume the weight density of water is 9810 N/m3 (i)Theoretical discharge in liter/s (ii) the theoretical power required to run the pump in kW (iii) the percentage of slip (iv) the coefficient of discharge.