The relative jet exit velocity from a rocket is 2700 m/s. The forward flight velocity is 1350 m/s. What is the propulsive efficiency of the unit?
If carbon present in cast iron is partly free and partly in combined state, it is called ____.
For the radiation between two infinite parallel planes of emissivity respectively, which one of the following is the expression for emissivity factor?
With natural uranium, which of the following is used as moderator?
In a mass transfer process of diffusion of hot smoke in cold air in a power plant, the temperature profile and the concentration profile will become identical when
Thermal diffusivity of a substance is
Which of the following is an example of mesomorphous material
For a governor running at constant speed, what is the value of the force acting on the sleeve.
Fluid is flowing through the horizontal pipe of uniform diameter 500 mm with an average velocity of 1 m/sec the dynamic head of pitot tube is_______(in mm) ?
In the calculation of induced shear stress in helical springs, the Wahl’s correction factor us used to take care of
During Inelastic collision of two particles, which one of the following is conserved?
Which of the following is true about critically damped system___?
Which of the following is not true about Atomic Hydrogen Welding?
PDSA is expanded as ____________
If poisons ratio of a material is 0.15 then, which of the following relations is true?
The difference between the time available to do a job and the time required to do the job, is known as
Which of the following casting process uses wax pattern?
If a thin plate is held parallel to a fluid stream the pressure drag on it is:
In a frame, the number of joint is 5, number of members=3, the frame is
German silver is an alloy of