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Electric welding
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ Electric arc welding process produces temperature upto 5550°C [other wrong options] [Discuss in forum] |
| Q2 ⇒ Air craft body is riveted [other wrong options] [Discuss in forum] |
| Q3 ⇒ In D.C. arc welding electrode is made negative and workpiece positive [other wrong options] [Discuss in forum] |
| Q4 ⇒ During spot welding the current flows for fraction of a second to several seconds [other wrong options] [Discuss in forum] |
| Q5 ⇒ A rectifier for welding has voltage/current characteristic as drooping [other wrong options] [Discuss in forum] |
| Q6 ⇒ Which of the following electrodes will have leastliameter ? 20 SWG [other wrong options] [Discuss in forum] |
| Q7 ⇒ The metal surfaces for electrical resistance welding must be cleaned [other wrong options] [Discuss in forum] |
| Q8 ⇒ Increased heat due to shorter arc is harmful on account of all of the above [other wrong options] [Discuss in forum] |
| Q9 ⇒ For arc welding current range is usually 100 to 350 A [other wrong options] [Discuss in forum] |
| Q10 ⇒ The purpose of coating on arc welding electrodes is to all of the above [other wrong options] [Discuss in forum] |
| Q11 ⇒ ____ welding is not a resistance welding process. Carbon arc [other wrong options] [Discuss in forum] |
| Q12 ⇒ Which of the following is net a welding accessory ? Cable [other wrong options] [Discuss in forum] |
| Q13 ⇒ The danger of shock is maximum while inserting electrode into the holder [other wrong options] [Discuss in forum] |
| Q14 ⇒ In a welded joint poor fusion is due to which of the following ? Improper current [other wrong options] [Discuss in forum] |
| Q15 ⇒ Arc blow results in which of the following? All of the above defects [other wrong options] [Discuss in forum] |
| Q16 ⇒ Spot welding is used for thin metal sheets [other wrong options] [Discuss in forum] |
| Q17 ⇒ percent duty cycle of a welding machine means machine works for 5 minutes in a duration of 10 minutes [other wrong options] [Discuss in forum] |
| Q18 ⇒ The power factor of a spot welding machine is expected to be around 0.3 to 0.5 lagging [other wrong options] [Discuss in forum] |
| Q19 ⇒ Grey iron is usually welded by Gas welding [other wrong options] [Discuss in forum] |
| Q20 ⇒ The welding electric circuit is always earthed [other wrong options] [Discuss in forum] |
| Or |