ASSIGNMENT | |
ACADEMIC YEAR | 20-21 |
Alandi (D), Pune – 412105 | SEM / TRI VI |
SCHOOL OF MECHANICAL AND CIVIL ENGG. | CLASS & DIVISION / BLOCK A |
COURSE | TURBOMACHINE | ASSIGNMENT NO. | 2 |
COURSE INSTRUCTOR | DATE |
Que. No. | Question Description | Marks | CO No. | BT Level |
1 | A twin jet Pelton wheel has a mean runner diameter of 1.68 m & runs at 500rpm, each jet is of dia. 152 mm. The net head is 510 m. Bucket turns the jet through 1650 & relative velocity is reduced by 12% when it flows over the bucket. Windage & mechanical losses are 3% of the water power supplied. Nozzle co-efficient = 0.98. Find: Water power supplied. Brake power.Force of each jet on bucket.Overall efficiency. | 05 | 2 | 4 |
2 | Following data relate to an inward flow reaction turbine with radial discharge: Power = 400kW, Speed= 900rpm, Head available= 70m, Hydraulic efficiency= 95%, Flow ratio= 0.18, Width to diameter ratio at inlet= 0.11, ratio of inlet to outlet diameter= 2. Determine the dimensions of turbine and degree of reaction. Assume, constant velocity of flow. | 05 | 3 | 4 |
(Remark: Course Instructor to add assessment rubrics for each assignment)