Where necessary, assume air as an ideal gas and consider R = 287 J/(kg.K), Cp = 1005 J/(kg.K), Cv = 718 J/(kg.K). a) A nozzle is a device that is used to increase the velocity of a fluid by varying the cross-sectional area. At the last section of a jet engine (Fig Q1.a, section 5), air with a mass flow rate of 50 kg/s at a pressure of 500 kPa and a temperature of 600 K enters a nozzle with an inlet cross-sectional area of 5 m2. The exit area of the nozzle is 20% of its inlet area. The air leaves the nozzle at a velocity of 300 m/s. The nozzle is not well-insulated and during this process, 5 kJ/kg heat is lost. Figure Q1.a: Schematic of a Jet engine. (i) In analysing this nozzle using the 1st law of thermodynamics, the change in which type of energy is negligible?

Q: 54. A 5.0-kg box has an acceleration of 2.0 m/s when it is pulled by a horizontal force across a…

A:

Q: a. The static pressure on the pipe wall b. The dynamic pressure c. The stagnation pressure

A:

Q: Argon gas flows through a well-insulated nozzle at steady state. The temperature and velocity at the…

A:

Q: P3.34 A rocket motor is operating steadily, as shown in Fig. P3.34. The products of combustion…

A:

Q: 1. The pump running at 3500 r/min, has the following measured performance, Q. gal/min 50 100 150 200…

A:

Q: Figure P4.15 provides steady-state data for air flowing through a rectangular duct. Assuming ideal…

A:

Q: identify the limitations that exist withi different types of water turbines

A:

Q: 28. A centrifugal air compressor compresses 200 cfm from 12 psia to 90 psia. The initial specific…

A:

Q: 2. Use only the MD below to solve this Item; use it by plotting data and process to determine items…

A:

Hydronics