1
GATE ME 2017 Set 1
Numerical
+1
-0
Water (density $$= 1000$$ $$kg/{m^3}$$) at ambient temperature flows through a horizontal pipe of uniform cross section at the rate of $$1$$ $$kg/s.$$ If the pressure drop across the pipe is $$100$$ $$kPa,$$ the minimum power required to pump the water across the pipe, in watts, is
2
GATE ME 2004
+1
-0.3
A gas contained in a cylinder is compressed, the work required for compression being $$5000$$ $$kJ.$$ During the process, heat interaction of $$200$$ $$kJ$$ causes the surroundings to the heated. The change in internal energy of the gas during the process is
A
$$-7000$$ $$kJ$$
B
$$-3000$$ $$kJ$$
C
$$+3000$$ $$kJ$$
D
$$+7000$$ $$kJ$$
3
GATE ME 2003
+1
-0.3
A $$2$$ $$kW,$$ $$40$$ liter water heater is switched on for $$20$$ minutes. The heat capacity $${C_p}$$ for water is $$4.2$$ $$kJ/kg$$ $$K.$$ Assuming all the electrical energy has gone into heating the water, increase of the water temperature in degree centigrade is
A
$$2.7$$
B
$$4.0$$
C
$$14.3$$
D
$$25.25$$
4
GATE ME 2000
+1
-0.3
A steam turbine receives steam steadily at $$10$$ $$bar$$ with an enthalpy of $$3000$$ $$kJ/kg$$ and discharges at $$1$$ bar with an enthalpy of $$2700$$ $$kJ/kg.$$ The work output is $$250$$ $$kJ/kg.$$ The changes in kinetic and potential energies are negligible. The heat transfer from the turbine casing to the surroundings is equal to
A
$$0$$ $$kJ$$
B
$$50$$ $$kJ$$
C
$$150$$ $$kJ$$
D
$$250$$ $$kJ$$
GATE ME Subjects
EXAM MAP
Medical
NEET