Valves in pipe size of 2″ and under are normally made of_______________________?

Related Mcqs:

1. Ball bearings are normally made of _____________ steel?

   A. High speed
   B. High carbon
   C. Chrome
   D. Silicon

2. The high expansion metal normally used in the bimetallic thermometer is _______________ temperature measurement?

   A. Brass for low
   B. Nickel alloys for high
   C. Both A. & B.
   D. Aluminium for all

3. Steel pipes are normally manufactured by ______________ process?

   A. Extrusion
   B. Cold working
   C. Forging
   D. Electroforming

4. Thermometer bulb & capillary in case of mercury filled pressure spring expansion thermometer is normally made of ______________ as mercury does not amalgamate with it?

   A. Copper
   B. Copper alloys
   C. Stainless steel
   D. Monel

5. Cold worked steel parts are normally subjected to_________________?

   A. Normalising
   B. Hardening
   C. Annealing
   D. Shot peening

6. Hammers and railway rails are normally made of___________________?

   A. Mild steel
   B. Dead mild steel
   C. Medium carbon steel
   D. High carbon steel

7. In hot wire anemometer used for gas flow measurement, the wire is normally made of ______________________?

   A. Copper
   B. Platinum
   C. Constantan
   D. Chromium

8. Lead pipe is_____________________?

   A. Especially resistant to solutions containing H2SO4
   B. Usually joined by burning (e.g. by melting to adjacent pieces with a torch)
   C. Having very low elastic limit resulting in permanent deformation from either mechanical or
   thermal strain
   D. All A., B. and C.

9. Slow plastic deformation of metals under a constant stress is termed as _____________ failure?

   A. Fatigue
   B. Endurance
   C. Creep
   D. None of these

10. Slow and progressive deformation of a material with time under constant stress is called___________________?

    A. Creep
    B. Erosion
    C. Resilience
    D. None of these