A cylinder contains 5 m3 of an ideal gas at a pressure of 1 bar. This gas is compressed in a reversible isothermal process till its pressure increases to 5 bar. The work in kJ required for this process is

1.  804.7

2.  953.2

3.  981.7

4.  1012.2

4

804.7

Explanation :
No Explanation available for this question

A mono-atomic ideal gas (ϒ = 1.67 molecular weight = 40) is compressed adiabatically from 0.1 MPs, 300K to 0.2 MPa. The universal gas constant b=is 8.314 KJ Kmol-1 K-1. The work of compression of the gas (in KJ kg-1) is

1.   29.7

2.  19.9

3.  13.3

4.  0

4

29.7

Explanation :
No Explanation available for this question

The values of enthalpy of steam at the inlet and outlet of a steam turbine in a Rankine cycle are 2800 KJ/Kg and 1800 KJ/Kg respectively. Neglecting pump work, the specific steam consumption in kg/JW –hour is

1.  3.60

2.  0.36

3.  0.06

4.  0.01

4

3.60

Explanation :
No Explanation available for this question

The density of air in kg/m3 at the nozzle exit is

1.  0.560

2.  0.600

3.  0.727

4.   0.800

4

0.727

Explanation :
No Explanation available for this question

The density of air in kg/m3 at the nozzle exit is

1.  0.560

2.  0.600

3.  0.727

4.   0.800

4

0.727

Explanation :
No Explanation available for this question

The mass flow rate of air through the nozzle in kg/s is

1.  1.30

2.  1.77

3.  1.85

4.  2.06

4

2.06

Explanation :
No Explanation available for this question

Steam enters an adiabatic turbine operating at steady state with an a saturated mixture at 15 kPa with quality (dryness fraction) 0.9. The enthalpies of the saturated liquid and vapour at 15 kPa are hr = 225.94J/kg mass flow rate of steam is 10kg/s. Kinetic  and potential energy changes are negligible. The energy changes are negligible. The power output of the turbine in MW is

1.  6.5

2.  8.9

3.  9.1

4.  27.0

4

8.9

Explanation :
No Explanation available for this question

The exit temperature of the air is

1.  516 K

2.  532 K

3.  484 K

4.  468 K

4

484 K

Explanation :
No Explanation available for this question

The exit area of the nozzle in cm2 is

1.  90.1

2.  56.3

3.  4.4

4.  12.9

4

12.9

Explanation :
No Explanation available for this question

1.  901.2

2.  911.2

3.  17072.5

4.  17082.5

4