GATE ME 2022: Power Plant (App update required to attempt this test)

A steam plant has the boiler efficiency of 90%, turbine efficiency (mechanical) of 94%, generator efficiency of 98 % and cycle efficiency of 40%. If 8 % of the generated power is used to run the auxiliaries, the overall plant efficiency is

A steam power plant operates on a theoretical reheat cycle as shown below. Steam enters high pressure turbine at 150 bar and 550 °C (h₃ = 3450 kJ/kg) and expands upto 40 bar (h₄ = 3050 kJ/kg). It is reheated at constant pressure of 40 bar to 550 °C (h₅ = 3560 kJ/kg) and expands through the low pressure turbine to a condenser at 0.1 bar (h₆ = 2300 kJ/kg). Also given, h_f1 (at 0.1 bar) = 191.8 kJ/kg.
Thermal efficiency (in %) and steam rate (kg/kWh) of the plant neglecting pump work respectively are:

Air enters a compressor at 1 bar, 30˚C, which is also the state of environment. It leaves at 3.5 bar, 141˚C, and 90 m/sec. Neglecting inlet velocity and potential energy, the isothermal efficiency (in %) is _____. Take C_p of air = 1.0035 Kj/Kg-K.