Lead is poured into the joint between two pipes. These pipes may be made of____________________?

Related Mcqs:

1. In grey cast iron, carbon is present in the form of____________________?

   A. cementite B. free carbon C. flakes D. spheroids E. nodular aggregates of graphite...

2. 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...

3. Which of the following pipes is least corrosion resistant__________________?

   A. brass B. mild steel C. cast iron D. wrought iron E. copper...

4. The ratio of useful power; engine friction exhaust gas losses; cooling water, air and oil losses for a diesel engine is of the order of____________________?

   A. 5:25:30:50 B. 25:35:5:35 C. 25:5:10:60 D. 40:30:15:15 E. 25:5:35:35...

5. Lancashire boiler is of____________________?

   A. stationary<fire tube-type B. horizontal type C. natural cirulation type D. internally fired type E. all of the above...

6. Ultimate analysis of fuel is determination of percentage of____________________?

   A. carbon, hydrogen, nitrogen, sulphur, moisture B. fixed carbon, ash, volatile matter, moisture C. higher calorific value B. lower calorific value E. best analysis...

7. 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...

8. 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...

9. Addition of lead and bismuth to aluminium results in_________________?

   A. improvement of casting characteristics B. improvement of corrosion resistance C. one of the best known age and precipitation-hardening systems D. improving machinability E. none of the above...

10. Fusible plug for boilers is made of fusible metal containing tin, lead, and___________________?

    A. bismuth B. copper C. aluminium D. nickel E. iron...