# Pune University BE (Civil Engineering) Hydropower Engineering Question Papers

B.E. (Civil)

HYDROPOWER ENGINEERING

(Sem. – II) (2008 Pattern) (Open Elective)

Time :3 Hours]                                                                           [Max. Marks :100

Instructions to the candidates:

1)            Answer 3 questions from Section-I and 3 questions from Section-II.

2)           Answers to the two sections should be written in separate books.

3)           Neat diagrams must be drawn wherever necessary.

4)           Pigures to the right indicate full marks.

5)           Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed.

6)           Assume suitable data, if necessary.

SECTION – I

QIA a) What are the different sources of energy? Differentiate between renewable and non renewable energy sources.    [8]

b) Differentiate between hydropower and thermal power. [8]

OR

Q2) a) Explain hydropower potential of India on the basis of river systems, number of schemes and percentage potential developed.                                         [8]

b) What is pumped storage plant? What are its advantages and limitations. [8]

Q3) a) State the different types of runoff river plants. Explain the components and their functions of runoff river plant.                                             [8]

b)          Differentiate between microhydro power and storage hydro power plants.                                           [8]

OR

b)          Classify the hydropower plant on the basis of functions and plant capacity.                                   [8]

Q5) a) The runoff river hydropower plant has inflow of 30 cumecs and it works on head of 50 m with a provision for pondage to meet daily demand with load factor of 75%. Determine the power generation capacity of plant at 85% over all efficiency. What amount of pondage is needed if the plant operates at the peak station for six hours?         [10]

b) Define and state the equations for :                                                                                                             [8]

ii)           Capacity factor

iii)        Utilization factor

iv)         Plant factor

OR

Q6) a) A run of river plant operates as a peak load station with weekly load factor of 30%. What will be minimum flow in the river so that the station may act as base load station?            [10]

Assume :-

i)             Rated installed capacity of generator = 15,000 kW

ii)           Operating head = 25 m

iii)        Plant efficiency = 75%

Also determine the daily load factor if the river flow is 15 cumec.

b)        What is load duration curve? With the help of graph explain its significance and applications.                                 [8]

SECTION – II

Q7) a) Sketch the details of typical power house and show all components. State functions of all components.                [8]

OR

Q8) a) What are the safety requirements of power house?     [8]

b)        State any four power plant equipments and their functions.  [8]

Q9) a) Differentiate between reaction turbine and impulse turbine.                                           [8]

b)        Determine the number of turbines 8 diameter of runner for a power plant having 30 cumecs inflow, 15 m head. The efficiency of the turbine is 80% with the speed of 200 rpm. Assume the specific speed as 225 and speed ratio as 0.8.                           [10]

OR

QI0) a) What is the significance of surge tank and state its advantages? [8]

b)        A turbine generates 20,000 kw power at the head of250 m with two jets. If the overall efficiency of turbine is 75% and velocity of water in the jet is 95% of the theoretical velocity. Determine –                                                                                       [10]

i)              The quantity of water in cumecs.

ii)           The size of the jet.

Assume Cd = 0.98 8 speed ratio = 0.45.

QII) a) What are the provisions related to safety and electricity supply as per electricity act 2003?                                                                                                                               [8]

b)        What is the concept of carbon credits? Explain its significance. [8]

OR

Q12) a) What are the duties of electricity generation companies?                               [8]

What are the factors governing the pricing of electricity?       [8]