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For a normal shock at \( M_1 = 1.5 \), the static pressure ratio is nearest to

  • A.1.50
  • B.3.20
  • C.2.46
  • D.4.50

Answer: C

Using \( 1 + 1.1667 (M_1^2 - 1) \) with \( M_1^2 - 1 = 1.25 \) gives \( 1 + 1.458 = 2.458 \). Comparing with the value of 4.5 at Mach 2 shows how sharply shock strength climbs with Mach number, and with it the stagnation pressure loss.

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