1
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
A steel billet of $$2000$$ $$kg$$ mass is to be cooled from $$1250$$ $$K$$ to $$450$$ $$K.$$ The heat released during this process is to be used as a source of energy. The ambient temperature is $$303$$ $$K$$ and specific heat of steel is $$0.5$$ $$kJ/kg K.$$ the available energy of this billet is
A
$$490.44$$ $$MJ$$
B
$$30.95$$ $$MJ$$
C
$$10.35$$ $$MJ$$
D
$$0.10$$ $$MJ$$
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 $$10$$ $$kPa$$ $$\left( {{h_6} = 2165\,kJ/kg} \right).$$ GATE ME 2004 Thermodynamics - Rankine Cycle Question 30 English

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 $$10$$ $$kPa$$ $$\left( {{h_6} = 2165\,kJ/kg} \right).$$ GATE ME 2004 Thermodynamics - Rankine Cycle Question 29 English

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 2004
MCQ (Single Correct Answer)
+1
-0.3
A centrifugal pump is required to pump water to an open water tank situated $$4$$ $$km$$ away from the location of the pump through a pipe of diameter $$0.2$$ $$m$$ having Darcy’s friction factor of $$0.01.$$ The average speed of water in the pipe is $$2$$ $$m/s.$$ if it is maintain a constant head of $$5$$ $$m$$ in the tank, neglecting other minor losses, the absolute discharge pressure at the pump exist is ______________
A
$$0.449$$ bar
B
$$5.503$$ bar
C
$$44.911$$ bar
D
$$55.203$$ bar
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