Out of the following, the joint produced by ______________ has the lowest strength?

Related Mcqs:

1. As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the _____________ joint ?

   A. Butt
   B. Lap
   C. Welded
   D. None of these

2. ______________ cannot increase the fatigue strength of a material?

   A. Grain refining
   B. Grain coarsening
   C. Surface hardening
   D. Shot peening

3. ______________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently ?

   A. Collar
   B. Flanged
   C. Bell and Spigot
   D. Expansion

4. Lead is poured into the joint between two ______________ pipes?

   A. Mild steel
   B. Concrete
   C. Cast iron
   D. Asbestos cement

5. Which of the following commonly used condenser tube materials has the lowest thermal conductivity ?

   A. Admiralty brass
   B. Stainless steel
   C. Aluminium brass
   D. Titanium

6. Out of the following, the lowest packing of atoms exists in ____________________ crystal lattice structure?

   A. Hexagonal close, packed (hcp)
   B. Face centred cubic (fcc)
   C. Body centred cubic (bcc)
   D. Simple cubic

7. Steel & cast iron pipes are produced by ______________ casting ?

   A. Slush
   B. Die
   C. Investment
   D. True centrifugal

8. Which of the following has the least value of ultimate tensile strength (UTS) ?

   A. Medium carbon steel
   B. High carbon steel
   C. Cast iron
   D. Wrought iron

9. Which of the following is the most suitable abrasive for grinding high tensile strength materials ?

   A. Silicon carbide
   B. Corundum
   C. Aluminium oxide
   D. Boron carbide

10. Yield strength of a polycrystalline metal with an average grain size „d’, is proportional to ____________________?

    A. d1/2
    B. d-1/2
    C. d
    D. d-1