GATE ME 1998 | GATE ME Year Wise Previous Years Questions

GATE ME 1998

Subjective

-0

A cylinder of $$155$$ $$mm$$ is to be reduced $$150$$ $$mm$$ diameter in one turning cut with a feed of $$0.15$$ $$mm$$/ revolution and a cutting speed of $$150$$ $$m/min$$ on a $$NC$$ lathe. What are the programmed spindle speeds programmed feed rate, and the material removal rate?

GATE ME 1998

MCQ (Single Correct Answer)

-0.6

A flywheel of moment of inertia $$9.8$$ kg m² fluctuates by $$30$$ rpm for a fluctuation in energy of $$1936$$ Jouls. The mean speed of the flywheel is (in rpm)

$$600$$

$$900$$

$$968$$

$$29470$$

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

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