A. brass
B. mild steel
C. cast iron
D. wrought iron
E. copper
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Related Mcqs:
- Lead is poured into the joint between two pipes. These pipes may be made of____________________?
- A. cast iron B. vitrified clay C. asbestos cement D. concrete E. mild steel...
- Corrosion resistance of steel is increased by addition of________________?
- A. chromium and nickel B. sulphur, phosphorus, lead C. vanadium, aluminium D. tungsten, molybdenum, vanadium, chromium E. zinc...
- Corrosion resistance of steel is increased by adding__________________?
- A. chromium and nickel B. nickel and molybdenum C. aluminium and zinc D. tungsten and sulfur E. none of the above...
- Pipes for bicycle frames are made of___________________?
- A. cold rolled steel B. hot rolled steel C. forged steel D. cast steel E. carbon-chrome steel...
- Exhaust pipes of engines are covered with insulating marterial in order to_________________?
- A. keep the exhaust pipes warm B. reduce formation of condenstae C. reduce heat transfer to the engine room D. increase engine efficiency E. conserve heat...
- For pipes, turbulent flow occurs when Reynolds number is _____________________?
- A. less than 2000 B. between 2000 and 4000 C. more than 4000 D. less than 4000 E. none of the above...
- Which of the following constituents of steels is softest and least strong ________________?
- A. austenite B. pearlite C. ferrite D. cementlte E. bainite...
- The work done per unit mass of air in compression will’be least when n is equal to______________?
- A. 1 B. 1.2 , C. 1.3 D. 1.4 E. 1.5...
- Which of the following is not the correct method of increasing fatigue limit __________________?
- A. shot peening B. nitriding of surface C. cold working D. surface decarburisation E. under-stressing...
- Elinvar, an alloy used in precision instruments, hair springs for watches, etc. contains the following element as principal alloying element__________________?
- A. iron B. copper C. aluminium D. zinc E. nickel...
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