4ft (w) x 3 ft (d) box concrete culverts (n=0.013, entrance has 90° and 15° wingwall flares) carry 150 cfs along a 31-m length of pipe constructed at 1.0 % slope. the tailwater depth is 2 ft.
a) what is the headwater depth?
b) are the culverts flowing under inlet or outlet control conditions?
c) what would the headwater depth and flow regime for a flow rate of 190 cfs

Derive the correction factor formula for conical nozzle i=-(1+ cosa) and calculate the nozzle angle correction factor for a nozzle whose divergence hal-fangle is 13 (hint: assume that all the mass flow originates at the apex of the cone.

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.

In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?