chethrm

Question 1

Dry saturated steam - total heat input:

Answer 1

total heat input: 37.88

Question 2

Self-ignition - highest compression ratio:

Answer 2

highest compression ratio: 11.43

Question 3

A two-stage compressor - horsepower supplied to the compre:

Answer 3

horsepower supplied to the compre: 67 hp

Question 4

4 kg moles of IG - work done:

Answer 4

work done: 0

Question 5

Calculate ΔU for 1kg water

Answer 5

ΔU: 2087.5 kJ

Question 6

Air flows steadily and adiabatically - Temp of leaving air:

Answer 6

Temp of leaving air: 32.70 F

Question 7

Calc ideal available energy

Answer 7

ideal available energy: -840 kJ

Question 8

An ideal gas - thermal efficiency:

Answer 8

thermal efficiency: 0.591 or 0.1

Question 9

A 6 m3 tank contains helium - mass of helium:

Answer 9

mass of helium: 0.3518 or 18 kg

Question 10

Steam enters adiabatic nozzle - ratio of inlet D to outlet D:

Answer 10

nozzle ratio of inlet D to outlet D: 5.08

Question 11

An oil with dens of 56.1 - pressure at the outlet:

Answer 11

pressure at the outlet: 247.86 psia or 30.06 psi

Question 12

Steam at 200 psia - power output of turbine:

Answer 12

power output of turbine: 39.5 hp

Question 13

How much WORK is done by MAN

Answer 13

WORK done by MAN: 119 kCal

Question 14

For a certain gas - values of Cp in BTU:

Answer 14

values of Cp in BTU: 0.4015

Question 15

In a waste treatment plant - final temp of gas:

Answer 15

final temp of gas: 321.39 K

Question 16

An ideal gas occupies vol of 0.4 - work if pressure is 120:

Answer 16

work if pressure is 120: 8.82 kJ or 0.4157 kJ

Question 17

Air at 27 receives heat - heat added per kg:

Answer 17

heat added per kg: 646.2 kJ/kg

Question 18

A piston and cylinder mechanism - heat transfer:

Answer 18

heat transfer: 617.32 kJ

Question 19

An air compressor receives - temp of air delivered:

Answer 19

temp of air delivered: 43.55 C

Question 20

An ideal centrifugal air - spec work in compression:

Answer 20

spec work in compression: 140.7 kJ/kg