CEPTAM Welder Exam Model Paper |DRDO CEPTAM Technician Welder Model Paper

1. In an arc welding process, the three variables to be essentially controlled to obtain a satisfactory weldment are
   (a) Welding current, voltage and speed
   (b) welding current, voltage and arc length
   (c) Welding arc length and speed
   (d) voltage, arc length and speed
2.  In fusion welding process, penetration is the ratio of

(a) Depth of weld to length
(b) Depth of weld to width
(c) Width of weld to the depth
(d) Length of weld to depth

3.  A welding arc emits three types of non-ionising radiation. Which of the following types is likely to cause arc-eye?
(a) Infra-red
(b) Ultraviolet
(c) Visible
(d) None of these

4. A distance between the root and toe of a fillet weld is called
(a) Reinforcement
(b) Leg length
(c) Root gap
(d) Throat thickness

5. Forge welding is classified as
(a) Fusion welding with pressure
(b) Fusion welding without pressure
(c) Non-fusion welding with pressure
(d) Non-fusion welding without pressure

6. The coating factor used to make medium coated electrode is
(a) 1.25 – 3
(b) 1.4 – 1.5
(c) 1.6 -2.2
(d) Above 2.2

7. The part of DC welding generator that converts AC supply voltage to DC welding output voltage is
(a) Armature
(b) Carbon brushes
(c) Commutator
(d) Field coils

8. Principal materials used in soldering are
(a) Tin and Lead
(b) Tin and Copper
(c) Copper and Lead
(d) Zinc and Lead

9. In Thermit welding process, iron oxide and aluminium oxides are mixed in the ratio
(a) 1 : 3
(b) 3 : 1
(c) 1 : 2
(d) 2 : 1

10. An apron is a safety accessory used to protect
(a) Front body of the welder
(b) Eyes of the welder
(c) Hands of the welder
(d) Head of the welder