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Partial differential equations Quiz

MCQ: For partial differential equation, if b² - 4ac < 0 then equation is called

1. hyperbolic
2. parabolic
3. elliptic
4. none of above

C

Transformation of Equation Quiz

MCQ: Ideally, to ensure best results, aspect ratio should be equal to

1. zero
2. one
3. two
4. three

B

Purpose of CFD Quiz

MCQ: If Pu is upstream pressure and Pd is downstream pressure, Euler number is equal to

1. Pd - Pu/pV²
2. Pu - Pd/pV²
3. Pu - Pd/pV³
4. Pu - Pd/pV

B

Finite difference method Quiz

MCQ: Formula of central differencing for 2nd order is

1. Δhf(x) = f(x+h) - f(x)
2. Δh²f(x) = f(x+h) - f(x-h)
3. Δhf(x) = f(x) - f(x+h)
4. 2Δhf(x) = f(x+h) - f(x-h)

B

Purpose of CFD Quiz

MCQ: The ratio of flow inertia to external field is called

1. Froude number
2. Mach number
3. Reynolds number
4. cavitation number

A