WELDER IMPORTANT NIMI BASED MCQ

What is defined as vertical position of groove welding?
A. 1G
B. 2G
C. 3G
D. 6G

Which type of metal is used in a welding cable?
A. Iron
B. Brass
C. Bronze
D. Copper

Which of the following gas is used in TIG welding?
A. Helium
B. Oxygen
C. Hydrogen
D. Carbon dioxide

Which of the accessories should be worn during overhead welding?
A. Helmet
B. Sun glass
C. Hand screen
D. Welding goggles

Which one of the following do not assist fire?
A. Fuel
B. Oxygen
C. Ignition
D. Nitrogen

Which type of polarity is used in aluminium welding?

A. Rectifier set
B. AC Transformer
C. Reverse polarity
D. Straight polarity

What is polarity?
A. Circuit of current
B. Direction of current
C. Open circuit of current
D. Opposite direction of current

What is the effect long arc in welding?
A. Normal penetration
B. More penetration
C. Less penetration
D. Less weld deposit

Which type of polarity used in bare wire electrode?
A. Straight polarity
B. Reverse polarity
C. AC Transformer
D. Rectifier set

What are the two types of MS pipes?
A. Forged pipe / Rolled pipe
B. Strip rolled / moulded type
C. Bent sheet pipe / Hot forged
D. Seamless pipe / Resistance welded pipe

Which type of electrode produces short arc length?
A. Heavy coated electrodes
B. Light coated electrodes
C. Medium coated electrodes
D. Super heavy coated electrodes

Which type of arc length produces deep penetration weld?
A. Long arc length
B. Short arc length
C. Medium arc length
D. Too long arc length

What is the conversion function of a rectifier?
A. AC to AC
B. DC to DC
C. AC to DC
D. DC to AC

Which arc length produces correct fusion?
A. Long arc length
B. Short arc length
C. Normal arc length
D. Too long arc length

Which type of polarity is used in welding non ferrous metals?
A. AC Transformer
B. Reverse polarity
C. Straight polarity
D. DC Motor generator

Which is used for arc welding if there is no electric power supply?
A. Rectifier set
B. Transformer set
C. Motor generator set
D. Engine generator set

What is the angle of electrode while welding in vertical position?
A. 60° to 70°
B. 70° to 80°
C. 80° to 90°
D. 90° to 100°

Which type of arc produces humming sound?
A. Long arc length
B. Short arc length
C. Normal arc length
D. Too long arc length

Which types of arc length used in thin sheet metals?
A. Long arc length
B. Short arc length
C. Medium arc length
D. Deep short arc length

Which type polarity used in sheet metal welding?
A. Rectifier set
B. AC Transformer
C. Reverse polarity
D. Straight polarity