Which of the following is the correct formula for Engine Volumetric Efficiency, given that Va is the volume of air taken in the cylinder and Vc is the maximum possible volume in the cylinder?

9) What is brake power?

10) How many stable isotopes does uranium has?

11) Which of the following is the indicator of the combustion speed of diesel fuel?

12) Which of the following elements are used in control rods that are used in nuclear reactors to control the fission rate?