Login
Input
Output
Evaluation Input Image

The jet engine in Fig. P3.50 admits air at 20°C and 1 atm at (1), where A_1 = 0.5 m^2 and V_1 = 250 m/s. The fuel-air ratio is 1:30. The air leaves section (2) at 1 atm, V_2 = 900 m/s, and A_2 = 0.4 m^2. Compute the test stand support reaction R_x needed. <image 1>



(A) 99,000 N


(B) 102,000 N


(C) 121,000 N


Answer with the option's letter from the given choices directly. No punctuation.


Google: Gemini Pro Vision 1.0
mmmu / Energy_and_PowerPublic

C


Expected Answer: B

Difficulty: Hard

Subfield: Fluid Mechanics

Evaluation

Evaluation ID
7df20441-4d8e-4145-b5d4-a70bc3eee057
Created
February 21, 2024
Raw Output
{
  "id": "gen-QLadCiuYRpI6N0lmvFCWHn7ghJij",
  "model": "google/gemini-pro-vision",
  "choices": [
    {
      "message": {
        "role": "assistant",
        "content": " C"
      },
      "finish_reason": "STOP"
    }
  ],
  "object": "chat.completion",
  "created": 1708556757,
  "usage": {
    "prompt_tokens": 1724,
    "completion_tokens": 4,
    "total_tokens": 1728
  }
}