Superheated steam at 20 mpa, 5608c enters the turbine of a vapor power plant. the pressure at the exit of the turbine is 0.5 bar, and liquid leaves the condenser at 0.4 bar at 758c. the pressure is increased to 20.1 mpa across the pump. the turbine and pump have isentropic efficiencies of 81 and 85%, respectively. cooling water enters the condenser at 208c with a mass flow rate of 70.7 kg/s and exits the condenser at 388c. for the cycle, determine (a) the mass flow rate of steam, in kg/s. (b) the thermal efficiency.

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

a

explanation: