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SSC-JE ME || Technical Quiz-9

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Question 1

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?

Question 2

If carbon present in cast iron is partly free and partly in combined state, it is called ____.

Question 3

For the radiation between two infinite parallel planes of emissivity

respectively, which one of the following is the expression for emissivity factor?

Question 4

With natural uranium, which of the following is used as moderator?

Question 5

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

Question 6

Thermal diffusivity of a substance is

Question 7

Which of the following is an example of mesomorphous material

Question 8

For a governor running at constant speed, what is the value of the force acting on the sleeve.

Question 9

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) ?

Question 10

In the calculation of induced shear stress in helical springs, the Wahl’s correction factor us used to take care of

Question 11

During Inelastic collision of two particles, which one of the following is conserved?

Question 12

Which of the following is true about critically damped system___?

Question 13

Which of the following is not true about Atomic Hydrogen Welding?

Question 14

PDSA is expanded as ____________

Question 15

If poisons ratio of a material is 0.15 then, which of the following relations is true?

Question 16

The difference between the time available to do a job and the time required to do the job, is known as

Question 17

Which of the following casting process uses wax pattern?

Question 18

If a thin plate is held parallel to a fluid stream the pressure drag on it is:

Question 19

In a frame, the number of joint is 5, number of members=3, the frame is

Question 20

German silver is an alloy of

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AE & JE Exams Mechanical Engineering

Oct 6AE & JE Exams