Thermal Power Engineering Answers

Solve for the initial pressure in lb/ft² (before heated) and the heat added in Btu if a 20 m³ steel tank confines 200 lbs of certain gas consisting of 6% Hgas of Cp=3.419 btu/lb°R, R=766.54 ft.lb/lb°R, and 94% Sgasof Cp=0.15413 kJ/kg°K, R=2.7196 ft.lb/lb°R is being heated at constant volume until the absolute temperature doubles when initially at 12°C.

What is the KE of a body with a mass of 60 kg if it reaches the ground at 30 m

elevation at a velocity of 3.2 m/s? Express your answer in KJ.

Write a assembly program that takes two 2-D matrixes A and B. Add value of the matrixes and store it in different matrix called C. NB: Implement the above problem inside Main Procedure.

An air and water vapour mixture at 1bar and 26.7oC has a specific humidity of 0.0085.determine the 

percentage of saturation.

Two boilers one with superheater and other without superheater are delivering equal 

quantities of steam into a common main. The pressure in the boilers and the main is 16 bar. 

The temperature of the steam from a boiler with a superheater is 350°C and temperature of 

the steam in the main is 200°C. Determine the quality of steam supplied by the other boiler.

1. The throat area a convergent–divergent jet nozzle is 0.0125 m² and the nozzle entry conditions for the flow are 2.0 MPa and 1500 k respectively. Assuming stagnation conditions at the entry, estimate the flow rate through the nozzle. The ratio of specific heats may be assumed as 1.37. The nozzle exit area = 0.1m², inlet pressure and temperature are 2.5 MPa and 1100 k respectively. Exit pressure is 113745 Pa. The ratio of specific heats may be assumed as 1.4.

 A 0.070 0-kg of brass is heated to 230.0°C and then dropped into a beaker containing 0.900 kg of water. If the final equilibrium temperature of the mixed system is 23.4°C, find the initial temperature of water.

If three resistor are connected in series, what is the total current if the value of R1= 12 mega ohm R2 = 20 mega ohmR3 = 5 mega ohm and the voltage source is Et = 24 volts

Water at an average temperature of 10°C flows inside a

horizontal smooth tube of 5 mm diameter with a velocity of

10 cm/sec. The surface of the tube is maintained at 70°C and

tube is 1 m long. Calculate the rate of heat transfer to the

water.