Power Plant Engineering
Pick up the wrong statement

In a heterogeneous or solid fuel reactor, the fuel is mixed in a regular pattern within moderator
Fast neutrons have energies above 1000 eV
Fast reactor uses moderator
Slow or thermal neutrons have energy of the order or 0.025 eV

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Theory of Machine
Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of a cross belt drive. The length of the belt is

π (r₁ - r₂) + [(r₁ + r₂)²/x] + 2x
π (r₁ + r₂) + [(r₁ + r₂)²/x] + 2x
π (r₁ + r₂) + [(r₁ - r₂)²/x] + 2x
π (r₁ - r₂) + [(r₁ - r₂)²/x] + 2x

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