A mug lift to be designed, has desired capacity of 30 t/h with a lifting height of 24 meters andmaximum average speed of 1.50 m/s. The material to be transported has a specific weight of0.72 t/m ³ (whole soybean), and the operating conditions are continuously. The lift has a screwstretcher and coated drum. Use yield 90% and bucket capacity of 0.0085 m ³. Data: soybeandensity 774.5 kg/m³.Determine:a)b)c)d)e)f)Elevator type;Choice of lift series;The distance between the centers of the elevator barrels;Calculation of engine power;Calculation of the capacity of the mug lift;Calculation of belt tensions.

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Answered: A mug lift to be designed, has desired…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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2.5-L bench scale bioreactor is used for the production of recombinant P64K protein from Neisseria meningitides. The dimensions for the bioreactor are Dt 12.9 cm, ratio Di/Dt = 1/3 and N = 700 rpm. With the scale up factor of 2.24, determine the impeller tip speed (m/s) for the pilot scale bioreactor based on constant impeller tip speed and constant power consumption per volume. Predict which scale up method might give a higher concentration of P64K, if the demand of dissolved oxygen plays an important role.
Eng. to select material for turbine disk based on its density, min strength 667 MPa., poisson ra 10 I2013. turbine disk specifications Radius = 270mm Man rotational velocity = 23458 rpm Assuming constant stresses over the thickness and the validity of the thick walled cylinders theory, calculate max. density (in kg/m³) to quarentee a safety fuctor of 1.8.
26 TAKE, TT =314, 9= 9 M=74-8 kg After your strenuous walk to the Rankine building, you decide to take the lift to the sixth floor. You enter the lift at tau 4,8 s with a load corresponding to your total mass (vettheallective haine) if you now consider a force applied due to gravity acting on you, with the spring stiffness of the lift cable being k 79703 N/m, the damping coefficient of the lift c 4760 Ns/m and the mass of the lift without any occupants of 811 kg, so that the deflection can be described as - 很 (t-7)-tan x(t) = What is the damped frequency (in radians/second) of the lift after you enter it? Answer Calculate the deflection when and walt -r)- tan Answer Q8 What would be the deflection at
A prototype pump is designed to so that the attached dimensionless performance curves apply. (a) If the pump is powered by a fixed speed motor delivering a rotational speed of 400 rpm and the impeller diameter is 2 m find the unknown quantities (Q, H, P,n ). Assume the pump is operating a peak efficiency and is pumping cold water. (b) If the pump is to be connected to standard steel pipe, which pipe should be used. Сн 1.00 Efficiency-n 0.75 CH 3 0.50 0.25 0.04 0.08 0.12 0.16 Ce C, and Efficiency
Let the curve for and f for a 3-in. diameter x 6-in. long bearing be a passing straight line through c= 75, f = 0.003) and D ( = 375, f = 0,0065) . SAE 10 oil at operating temperature of 180 °F. Find the friction horsepower lost the bearing for the following new set of operating conditions: Zn 230 ; load on the bearing of 1,400 Ibs., and a speed of 1000 rpm for the journal or shaft. 4 to a- undary ubrate R to c-Md cation CND-Hytrotneme Lubvicaton Zve 0.14 hp 0.16 hp 0.18 hp 0.20 hp
6. P, Thrust washer A sluice gate weighing 18 kN is raised and lowered by means of square threaded screws, as shown in Fig. 10.30. The frictional resistance induced by water pressure against the gate when it is in its lowest Nut position is 4000 N. The outside diameter of the screw is 60 mm and pitch Screw is 10 mm. The outside and inside diameter of washer is 150 mm and 50 mm respectively. The coefficient of friction between the screw and nut is 0.1 and for Fig. 10.30 the washer and seat is 0.12. Find : 1. The maximum force to be exerted at the ends of the lever for raising and lowering the gate, and 2. Efficiency of the arrangement. [Ans. 114 N; 50 N ; 15.4%
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A small model of a water pump has the ff. performance characteristics:D1 = 9in; N1 = 1760 RPM; Q1 = 562.5 GPM; BP1 = 15 hpIf a larger model geometrically similar to the small pump is to be used to deliver kerosene (S.G. = 0.80) at 1200 GPM at speed of 1500 RPM, what is the required impeller diameter in inches for the larger pump? what is the required brake horsepower for the larger model?
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(A) If the power losses in Pelton wheel due to bucket friction is given by 1 POK V -u)? where K is a dimensionless constant. Derive an expression to the ratio that gives maximum power. V,
1. A wheel tractor has a 200 HP engine. Calculate the available rimpull of this tractorif it is operating at an altitude of 1,000 m. above sea level, at an averagetemperature of 25oC, and at an average speed of 12 km/hr. Take rimpull efficiencyas 85%.2. The weight of the wheel tractor in Problem 1 is 30 tons and the weight on the drivingwheels is 50% of this weight. What is the maximum available rimpull if thecoefficient of traction is 0.25?3. What is the maximum grade that the tractor in Problems 1 and 2 can climb if it ismoving on a surface with a rolling resistance of 150 kg/ton?4. Assume that the tractor in Problems 1, 2, and 3 is moving down a 8% grade. Howmany minutes are necessary to accelerate to the average speed of 5 km/hr in firstgear? Use a rimpull reduction factor of 75% in your calculations.
An industrial water shutoff valve is designed to operate with 10 N of effort force on the wheel. The valve will encounter 30 N of resistance force applied to an axle that is 0.35 m in diameter. What is the required diameter of the wheel?

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