A2m^3 rigid tank contains steam at 200°c, 25% of the tank's volume is filled with liquid, the rest is vapor. determine: a)-the pressure in the tank. b)-the quality of the mixture. c)-the density of the vapor d)-the density of the liquid. e)-the total mass of water (liquid and vapor) in the tank.

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.

An external consultant recommends that a plant installs a bank of capacitors for power factor correction. this will reduce the peak electrical demand charges by an average of 93 kw every month. the plant current pays $13 per kw in peak demand charges. the capacitor bank will include 223 kw of fixed capacitors, and 183 of variable capacitors. the fixed capacitors cost $59 per kw, and the variable capacitors will cost $65 per kw. the consultant charges 21% of the equipment costs to install the capacitors. because this project will reduce the demand for the electric utility, they are prepared to provide a one-time rebate of $42 per kw of reduced demand. what is the simple payback period for this project (in years)?