a. Air at 8 bar 100°C flows in a duct of 15 cm diameter at rate of 150 kg/min. It is throttled by upto4 bar pressure. Determine the velocity of air after throttling and also show that enthalpy constantbefore and after throttling.b,Ans. 37.8 m/s1. Determine the power required by a compressor designed to compress atmospheric through inletarea of 90 cm? with velocity of 50 m/s and leaves with velocity of 120 m/s from exit area of 5cm?. Consider heat losses to environment to be 10% of power input to compressor.Ans. 50.4 kwC' Determine the power available from a steam turbine with following details;Steam flow rate = 1 kg/sVelocity at inlet and exit = 100 m/s and 150 m/sEnthalpy at inlet and exit = 2900 kJ/kg, 1600 k]/kgChange in potential energy may be assumed negligible.Ans. 1293.75 kwd. Determine the heat transfer in emptying of a rigid tank of 1 m² volume containing air at 3 bar and27°C initially. Air is allowed to escape slowly by opening a valve until the pressure in tank dropsto 1 bar pressure. Consider escape of air in tank to follow polytrophic process with index n = 1.2Ans. 76.86 kJ

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Description: a. Air at 8 bar 100°C flows in a duct of 15 cm diameter at rate of 150 kg/min. It is throttled by upto4 bar pressure. Determine the velocity of air after throttling and also show that enthalpy constantbefore and after throttling.b,Ans. 37.8 m/s1. De

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Air at 8 bar 100°C flows in a duct of 15 cm diameter at rate of 150 kg/min. It is throttled by upto 4 bar pressure. Determine the velocity of air after throttling and also show that enthalpy constant before and after throttling. Ans. 37.8 m/s

Air at 8 bar 100°C flows in a duct of 15 cm diameter at rate of 150 kg/min. It is throttled by upto 4 bar pressure. Determine the velocity of air after throttling and also show that enthalpy constant before and after throttling. Ans. 37.8 m/s

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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