You have a 240- resistor and a 0.420-h inductor. suppose you take the resistor and inductor and make a series circuit with a voltage source that has a voltage amplitude of 33.0 v and an angular frequency of 270 rad/s .
what is the impedance of the circuit?
what is the current amplitude?
what is the voltage amplitude across the resistor?
what is the voltage amplitudes across the inductor?
what is the phase angle of the source voltage with respect to the current?
does the source voltage lag or lead the current?

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)