Top 150+ Solved Manufacturing Technology 1 MCQ Questions Answer
Q. In which of the following type of flame, oxygen is deficient in proportion with acetylene?
a. neutral flame
b. oxidizing flame
c. carburizing flame
d. both oxidizing flame and carburizing flame
Q. For brazing, soldering and flame hardening which of the following flame is used?
a. neutral flame
b. oxidizing flame
c. carburizing flame
d. both oxidizing flame and carburizing flame
Q. The inner cone of the flame in welding has the following nature?
a. highest temperature
b. coldest temperature
c. moderate temperature
d. uncertain
Q. The oxy acetylene gas welding is a type of?
a. endothermic reaction
b. exothermic reaction
c. neutral reaction
d. both endothermic reaction and exothermic reaction
Q. Amount of time during which the transformer will be used for welding under normal loading condition is known as?
a. hold time
b. off time
c. weld time
d. duty cycle
Q. Amount of voltage required to generate the arc under no load condition is called?
a. open circuit voltage
b. closed circuit voltage
c. short circuit voltage
d. arc voltage
Q. In which of the following gas welding process a non-consumable electrode is used?
a. submerged arc welding
b. tungsten inert gas welding
c. stud welding
d. gas metal arc welding
Q. What is the function of flux in submerged arc welding?
a. to completely cover the welded zone
b. to prevent oxidation of joint
c. to prevent spattering of molten metal
d. to prevent sticking of molten metal
Q. If the heat transfer efficiency is 0.5 and the melting efficiency is 0.6, then the overall efficiency will be?
a. 0.83
b. 0.03
c. 0.30
d. 0.12
Q. The deflection of the arc in arc blow is by?
a. electric field
b. magnetic field
c. combination of both
d. hydrostatic field
Q. Which of the following gas welding process uses constant voltage?
a. submerged arc welding
b. tungsten inert gas welding
c. stud welding
d. gas metal arc welding
Q. In order to prevent oxidation and retain molten metal in stud welding which of the following is used?
a. ceramic rings
b. metal rings
c. non-metal rings
d. flux