GATE ME 1998 | GATE ME Year Wise Previous Years Questions

GATE ME 1998

MCQ (Single Correct Answer)

-0.3

If $$\,\,{V_N}\,\,$$ and $$\alpha $$ are the nozzle exit velocity and nozzle angle in an impulse turbine, the optimum blade velocity is given by

$${V_N}\,\,\,\cos \,\,\,2\alpha $$

$${V_N}\,\,\,sin\,\,\,2\alpha $$

$${{{V_N}\,\,\,\cos \,\,\,\alpha } \over 2}$$

$${{{V_N}\,\,\,sin\,\,\,\alpha } \over 2}$$

GATE ME 1998

MCQ (Single Correct Answer)

-0.3

A Curtis stage, Rateau stage and a $$50$$% reaction stage in a steam turbine are examples of

different types of impulse stages

different types of reaction stages

a simple impulse stage, a velocity compounded impulse stage and reaction stage

a velocity compounded impulse stage, a simple impulse stage and a reaction stage

GATE ME 1998

MCQ (Single Correct Answer)

-0.6

The isentropic heat drop in the nozzle of an impulse steam turbine with a nozzle efficiency $$0.9,$$ blade velocity ratio $$0.5,$$ and mean blade velocity $$150$$ $$m/s$$ in $$kJ/kg$$ is

$$50$$

$$40$$

$$60$$

$$75$$

GATE ME 1998

Subjective

-0

A Rankine cycle operates between pressures of $$80$$ bar and $$0.1$$ bar. The maximum cycle temperature is $${600^ \circ }C.$$ If the steam turbine and condensate pump efficiencies are $$0.9$$ and $$0.8$$, respectively, calculate the specific work and thermal efficiency. Relevant steam table extract is given below: GATE ME 1998 Thermodynamics - Rankine Cycle Question 7 English

GATE ME 1998 Thermodynamics - Rankine Cycle Question 7 English

GATE ME Papers

2020