1
GATE ME 2005
MCQ (Single Correct Answer)
+2
-0.6
In the velocity diagram shown below, $$u=$$ blade velocity, $$C=$$ absolute fluid velocity and $$W =$$ relative velocity of fluid and the subscripts $$1$$ and $$2$$ refer to inlet and outlet.
A
an impulse turbine
B
a reaction turbine
C
a centrifugal compressor
D
an axial flow compressor
2
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
Consider a steam power plant using a reheat cycle as shown. Steam leaves the boiler and enters the turbine at $$4$$ $$MPa,$$ $${350^ \circ }C$$ $$\left( {{h_3} = 3095\,\,kJ/kg} \right).$$ After expansion in the turbine to $$400$$ $$kPa$$ $$\left( {{h_4} = 2609\,\,kJ/kg} \right)$$, the steam is reheated to $${350^ \circ }C$$ $$\left( {{h_5} = 3170\,kJ/kg} \right),$$ and then expanded in a low pressure turbine to $$10$$ $$kPa$$ $$\left( {{h_6} = 2165\,kJ/kg} \right).$$

The thermal efficiency of the plant neglecting pump work is

A
$$15.8\%$$
B
$$41.1\%$$
C
$$48.5\%$$
D
$$58.6\%$$
3
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
Consider a steam power plant using a reheat cycle as shown. Steam leaves the boiler and enters the turbine at $$4$$ $$MPa,$$ $${350^ \circ }C$$ $$\left( {{h_3} = 3095\,\,kJ/kg} \right).$$ After expansion in the turbine to $$400$$ $$kPa$$ $$\left( {{h_4} = 2609\,\,kJ/kg} \right)$$, the steam is reheated to $${350^ \circ }C$$ $$\left( {{h_5} = 3170\,kJ/kg} \right),$$ and then expanded in a low pressure turbine to $$10$$ $$kPa$$ $$\left( {{h_6} = 2165\,kJ/kg} \right).$$

The enthalpy at the pump discharge $$({h_2})$$ is

A
$$0.33$$ $$kJ/kg$$
B
$$3.33$$ $$kJ/kg$$
C
$$4.0$$ $$kJ/kg$$
D
$$33.3$$ $$kJ/kg$$
4
GATE ME 2003
MCQ (Single Correct Answer)
+2
-0.6
Match the following
A
$$P - 2,\,\,Q - 1,\,\,R - 7,\,\,S - 6$$
B
$$P - 6,\,\,Q - 3,\,\,R - 4,\,\,S - 4$$
C
$$P - 4,\,\,Q - 1,\,\,R - 6,\,\,S - 2$$
D
$$P - 3,\,\,Q - 4,\,\,R - 6,\,\,S - 7$$
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