Air enters the compressor of a gas turbine at 70°f and 0.8 psig and leaves the compressor at 300°f and 36 psig. it leaves the nozzle of the gas turbine at 650°f and 2.5 psig. with the atmospheric pressure of 14.7psi and nozzle exit area of 4 in^2: determine the following: a) pressure ratio b) ideal efficiency c) thrust generated by the engine in lbf d) mach number

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

Fluids at rest possess no flow energy. a)- true b)- false

Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk