# Partial differential equations Quiz Questions and Answers 13 PDF Download

Learn partial differential equations quiz, online mechanical engineering test 13 for online courses, distance learning. Free cfd MCQs questions and answers to learn partial differential equations MCQs with answers. Practice MCQs to test knowledge on partial differential equations, transformation of equation, purpose of cfd, finite difference method for engineering majors admission preparation.

Free partial differential equations course worksheet has multiple choice quiz question as for partial differential equation, if b² - 4ac < 0 then equation is called with options hyperbolic, parabolic, elliptic and none of these with problems solving answer key to test study skills for online e-learning, viva help and jobs' interview preparation tips, study mathematical behavior of partial differential equation multiple choice questions based quiz question and answers.

## Quiz on Partial differential equations Quiz PDF Download Worksheet 13

Purpose of CFD Quiz

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

- hyperbolic
- parabolic
- elliptic
- None of these

C

Purpose of CFD Quiz

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

- zero
- one
- two
- three

B

Purpose of CFD Quiz

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

- Pd - Pu/pV²
- Pu - Pd/pV²
- Pu - Pd/pV³
- Pu - Pd/pV

B

Purpose of CFD Quiz

MCQ. Formula of central differencing for 2nd order is

- Δhf(x) = f(x+h) - f(x)
- Δh²f(x) = f(x+h) - f(x-h)
- Δhf(x) = f(x) - f(x+h)
- 2Δhf(x) = f(x+h) - f(x-h)

B

Purpose of CFD Quiz

MCQ. Ratio of flow inertia to external field is called

- Froude number
- Mach number
- Reynolds number
- cavitation number

A