What is Mach number? / » Thermal Engineering 2 solved MCQs / By admin Question: What is Mach number? A. speed of object * speed of sound B. speed of object /speed of sound C. speed of object + speed of sound D. speed of object- speed of sound Answer» b. speed of object /speed of sound Note: The above multiple-choice question is for all general and Competitive Exams in India.
