A twin jet Pelton wheel is required to generate 750O KW when the available head at a nozzle is 400 m. Assuming generator efficiency of 95% overall wheel efficiency of 80% , coefficient of velocity as 0.98, speed ratio as 0.46, reduction in relative velocity while passing through bucket as 15% and taking that the jet is deflected through 165 by the bucket, the diameter of each jet

A twin jet Pelton wheel is required to generate 750O KW when the available head at a nozzle is 400 m. Assuming generator efficiency of 95% overall wheel efficiency of 80% , coefficient of velocity as 0.98, speed ratio as 0.46, reduction in relative velocity while passing through bucket as 15% and taking that the jet is deflected through 165 by the bucket, the diameter of each jet

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

See similar textbooks

Similar questions

A twin jet Pelton wheel is required to generate 7500 KW when the available head at a nozzle is 400 m. Assuming generator efficiency of 95% overall wheel efficiency of 80% , coefficient of velocity as 0.98, speed ratio as 0.46, reduction in relative velocity while passing through bucket as 15% and taking that the jet is deflected through 165 by the bucket, total flow is 2516 lit/sec O 3452 lit/sec 17834 lit/sec 11987 lit/sec
A twin jet Pelton wheel is required to generate 7500 KW when the available head at a nozzle is 400 m. Assuming generator efficiency of 95% overall wheel efficiency of 80% , coefficient of velocity as 0.98, speed ratio as 0.46, reduction in relative velocity while passing through bucket as 15% and taking that the jet is deflected through 165 by the bucket, the force excreted by the jet on buckets in tangential direction. 103.47 KN 163.21 KN 189.78 KN 1765.23 KN
A twin jet Pelton wheel is required to generate 7500 KW when the available head at a nozzle is 400 m. Assuming generator efficiency of 95% overall wheel efficiency of 80% , coefficient of velocity as 0.98, speed ratio as 0.46, reduction in relative velocity while passing through bucket as 15% and taking that the jet is deflected through 165 by the bucket, the corresponding mean diameter of runner 1.557 m 2.123 m 3.543 m 4.219 m
2- Diesel engine, six cylinders is tested at 4750 rpm, the pressure and temperature of the air entering the engine are 1.2bar, and 25 if the bore of cylinder is 80 mm and stroke 120 mm ,take air fuel ratio is 12:1, the specific fuel consumption is 0.52kg/kWh, and the brake power is equal 94 kW find the following: fuel consumption m'f = kg/ sec the air consumption engine capacity.: the flow rate of air intake to cylinder the Volumetric efficiency
-An experimental wind terbine, designed for e fficiency operation, has blades 37.5m in 'diameter = l100 th?). 1t producest 100kw ot elec tric power at a optimum (Ap wind speed 3 m/s. Determine the shaft power and the efficiency of the electric generator, rotor, friction Combined. m/s D Thrust force F= O Pas Wshft = 2 Efficiency= Showall work step by step N-mls
E 14.5. A Pelton turbine delivers 14.25 MW when running at 600 rpm under a head of 900 m. Assum- ing an overall efficiency of 89.2%. Determine the jet diameter and the wheel diameter. Assume C = 0.98 and speed ratio as 0.46. (134 mm, 1910 mm).
( Apelton wheel generates 8000 kWunder net head of 130m at speed of 200rpm-Speed ratio 0-46.jet diameter to wheel diameter ratio is 1/9 mechaincal efficiency is 75% Determine @ Discharge required Diameter of the wheel © Diameten and numberoljet required specificof speed of turbine
نقطتان )2( A Pelton wheel has to develop 18000 B.H.P under a net head of 800 m, while running at a speed of 600 rpm. If the coefficient of the jet=D0.97, speed ratio= 0.46 and the ratio of the jet diameter is 1/15 of wheel diameter, assume overall efficiency as 85%. Calculate the .diameter of the pitch circle 1.78 m O 2.34 m O 3.67 m O 4.52 m O صفحة 2 من 5 :)
Q2) A square four cylinder automotive spark-ignition engine is being designed to provide a maximum brake torque of 150 N-m, in the mid-speed range 3000 rev/min, Assume the mean effective pressure is 925 kPa, he maximum mean piston speed is 15 m/s إجابتك * ,i. Estimate the required engine displacement 0.002 m3 0.003 m3 0.02 m3 0.0025 m3 * , Estimate bore 0.076 m 0.086 m 0.08 m 0.068 m * , Estimate stroke 0.086 m 0.076 m 0.068 m 0.08 m * Estimate the maximum brake power the engine will deliver 60 kw 65 kw 70 kw 75 kw O O O O O o o o O O O O O O
The brake thermal efficiency of a diesel engine is 30%. If air to fact ratio by weight is 20 and calorific value of fuel is 41800 kJ/kg. Find brake mean effective pressure at STP (15°C and 760 mm Hg).
Considering the wind speed of 5 m/s, air density of 1 kg/m3, exponentfactor is 0.20 and turbine diameter of 100 m:a. Calculate the turbine electrical power considering the maximumBitz limit,b. The original wind speed was taken at a height of 10 m,calculate the turbine power if it is now installed at 50 m height.c. In what condition a capacity factor of 73% can be reached bythis turbine.
1 A six-cylinder, gasoline engine operates on the four-stroke cycle. The bore of each cylinder is 80 mm and the stroke 100 mm. The clearance volume per cylinder is 70 cc. At a speed of 4000 rpm the fuel consump- tion is 20 kg/h and the torque developed is 150 Nm. Calculate (i) the brake power (ii) the brake mean effective pressure (iii) brake thermal efficiency if the calorific value of the fuel is 43000 kJ/kg and (iv) the relative efficiency on a brake power basis assuming the engine works on the constant volume cycle. y = 1.4 for air.