SSC JE Civil Engineering 30-Oct-2020 Shift 2 Paper

Explanation:
Given;
Total discharge through pelton turbine = 3 ${\mathrm{m}}^3∕\mathrm{s}$
Area of jet = 0.02 ${\mathrm{m}}^2$
Velocity of jet = 75 m/s
Calculation:
Discharge through jet $=$ 0.02 × 75 = 1.5 ${\mathrm{m}}^3∕\mathrm{s}$
Number of jet $=\frac{\mathrm{Total}\mathrm{discharge}}{\mathrm{Discharge}\mathrm{through}\mathrm{on}\mathrm{jet}}$ $=31.5=2$