1
GATE ME 2009
+2
-0.6
The inlet and the outlet conditions of steam for an adiabatic steam turbine are as indicated in the figure. The notations are as usually followed.

If mass flow rate of steam through the turbine is $$20kg/s,$$ the power output of the turbine (in $$MW$$) is

A
$$12.157$$
B
$$12.941$$
C
$$168.001$$
D
$$168.785$$
2
GATE ME 2009
+2
-0.6
The inlet and the outlet conditions of steam for an adiabatic steam turbine are as indicated in the figure. The notations are as usually followed.

Assume the above turbine to be part of a simple Rankine cycle. The density of water at the inlet to the pump is $$1000$$ $$kg/{m^3}.$$ Ignoring kinetic and potential energy effects, the specific work (in $$kJ/kg$$) supplied to the pump is

A
$$0.293$$
B
$$0.351$$
C
$$2.930$$
D
$$3.510$$
3
GATE ME 2008
+2
-0.6
A thermal power plant operates on a regenerative cycle with a single open feed water heater, as shown in the figure. For the state points shown, the specific enthalpies are: $${h_1} = 2800\,\,kJ/kg$$ and $${h_2} = 200\,\,kJ/kg$$. The bleed to the feed-water heater is $$20\%$$ of the boiler steam generation rate. The specific enthalpy at state $$3$$ is
A
$$720$$ $$Kj/kg$$
B
$$2280$$ $$Kj/kg$$
C
$$1500$$ $$Kj/kg$$
D
$$3000$$ $$Kj/kg$$
4
GATE ME 2007
+2
-0.6
Which combination of the following statements is correct?

The incorporation of re-heater in a steam power plant.

$$P:$$ always increases the thermal efficiency of the plant.
$$Q:$$ always increases the dryness function of steam at condenser inlet.
$$R:$$ always increases the mean temperature of heat addition
$$S:$$ always increases the specific work output.

A
$$P$$ and $$S$$
B
$$Q$$ and $$S$$
C
$$P,R$$ and $$S$$
D
$$P,Q,R$$ and $$S$$
GATE ME Subjects
EXAM MAP
Medical
NEET