1
GATE ME 2003
MCQ (Single Correct Answer)
+2
-0.6
For a certain engine having an average speed of $$1200$$ rpm, a flywheel approximated as a solid disc, is required for keeping the fluctuation of speed within $$2$$% about the average speed. The fluctuation of kinetic energy per cycle is found to be $$2$$kJ. What is the least possible mass of the flywheel if its diameter is not exceed $$1$$ m?
A
$$40$$ kg
B
$$51$$ kg
C
$$62$$ kg
D
$$73$$ kg
2
GATE ME 1998
MCQ (Single Correct Answer)
+2
-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)
A
$$600$$
B
$$900$$
C
$$968$$
D
$$29470$$
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