Q2: a. Sample of the isotope "I, which has a half-life of 8.04days, has a measured activity of (A) mci at the instant of shipment. Upon receipt in a medical laboratory, the activity is measured to be 4.2mCi.How much time has elapsed between the two measurements? b. Using proper schematic diagram, describe how the governor is used to control the speed variation in Pelton turbine. c. The average rate of inflows during the 12 months for a river are as shown in the table below: Month Jan Feb Mar Apr May Jun July Aug Sept Oct Nov Dec e 100 240 580 580 80 120 320 0 0 Averag 300 200 100 100 200 e inflow (m/ sec) c.1-Plot the hydrograph. c.2- Find the average inflow and the power that can be developed at an effective height of 150m and turbine-generator efficiency of 0.85. c.3- Find the capacity of storage reservoir.

Q2: a. Sample of the isotope "I, which has a half-life of 8.04days, has a measured activity of (A) mci at the instant of shipment. Upon receipt in a medical laboratory, the activity is measured to be 4.2mCi.How much time has elapsed between the two measurements? b. Using proper schematic diagram, describe how the governor is used to control the speed variation in Pelton turbine. c. The average rate of inflows during the 12 months for a river are as shown in the table below: Month Jan Feb Mar Apr May Jun July Aug Sept Oct Nov Dec e 100 240 580 580 80 120 320 0 0 Averag 300 200 100 100 200 e inflow (m/ sec) c.1-Plot the hydrograph. c.2- Find the average inflow and the power that can be developed at an effective height of 150m and turbine-generator efficiency of 0.85. c.3- Find the capacity of storage reservoir.