**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

Q4) a) Differentiate between base load and peak load plant. [8]

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]

i) Load factor

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]

b) State advantages and disadvantages of underground power house. [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 C_{d} = 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]