The exit temperature of the air is

Question

Statement for Linked Answer Q 01 & Q 02

Air enters an adiabatic nozzle at 300kPa, 500K with a velocity of 10 m/s. It leaves the nozzle at 100kPa with a velocity of 180m/s. The inlet area is 80cm². The specific heat of air C_p is 1008 J/kg.K.

1. The exit temperature of the air is                                                                                                                                                

      (a) 516 K                                                            (b) 532 K

      (c) 484 K                                                            (d) 468 K

 

  2 . The exit area of the nozzle in cm² is                                                                                                                                                   

      (a) 90.1                                                               (b) 56.3

      (c) 4.4                                                                 (d) 12.9