WELDER IMPORTANT NIMI BASED MCQ

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

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

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

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

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

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Which type of polarity is used in aluminium welding?

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

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

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

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

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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

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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

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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

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

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

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

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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

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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°

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

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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

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

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