How many times has the ITU-R revised the CCIR 601 international standard? A. four B. five C. six D. seven

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Steam enters a converging nozzle at 3.0 mpa and 500°c with a at 1.8 mpa. for a nozzle exit area of 32 cm2, determine the exit velocity, mass flow rate, and exit mach number if the nozzle: negligible velocity, and it exits (a) is isentropic (b) has an efficiency of 94 percent

The sum of the normal stresses does not change as the stress state rotates through an angle. a)-trune b)- false