JSSC JITOCE ATO EXAM QUESTION PAPER AND Answer -2023

Previous year jssc jitoce (ato) exam papers in welder trade-2023

 1.  In the inner (primary) cone of an oxy-acetylene flame, the acetylene combines with oxygen to from-

A) Carbon monoxide and oxygen

B) Hydrogen and oxygen

C) Carbon dioxide and hydrogen

D)Carbon monoxide and hydrogen

Ans. (D)

2.Find the Square of 44-

A) 2401

B) 2500

C) 2601

D) 1936

Ans. ( D)

3. When the 'top view' is below the 'front view' of the object in a drawing, then it is said to be _______ angle projection.

A) First

B) Third

C)Ninth

D) Eighth

Ans. (A)

4. In the leftward welding technique, the filler rod is held at an angel of _______ to the workpiece.

A) 30-40

B) 50-75

C) 15-20

D) 5-15

Ans. ( A)

5. Fine the square of 48 is

A ) 2500

B) 2401

C) 2304

D) 2601

Ans. ( C)

6.  A_______ angle corner is generally NOT found in drawing set-squares.

    A) 20°

    B)  60°

    C) 45°

    D) 30°

Ans. (A)

7. The title block is placed generally in the ____hand corner of the drawing sheet.

    A) Bottom-left

    B) Top-right

    C) Bottom-right

    D) Top-left

Ans. (C)

8. In drawing, a "continuous thick line" is used to depict-

    A) Hidden lines

    B) Imaginary lines

    C) Centre lines

    D) Visible outline

Ans. (D)

9. If the base length of a triangle is 10 mm and its height is 20 mm, what is the area of the triangle ?

    A) 200

    B) 300

    C) 100

    D) 400

Ans. (C)

10. Liquid oxygen boils at-

    A) -183° C

    B) -250° C

    C) -260° C

    D) -273° C

    Ans. (a)

11. When the ' front view" is below the " top view" of the object in a drawing, then it is said to be ___ angle projecion.

    A. First 

    B. Eighth

    C. Third 

    D. Ninth

Ans. (c)

12. Welding of containment vessels, pipework, water tanks etc. made from plastic polymers is done by -

    A. None of the options

    B. Hot gas welding ( Hot air welding)

    C. Oxy-acetylene gas welding

    D. Arc welding

Ans. (b)

13. Identify the square root of 361

    A. 13

    B. 19

    C. 12

    D. 14

Ans. (b)

14. The circumference of a circle whose radius is 5 mm is -

    a. 20π

    b. 15π

    c. 25π

    d. 10π

Ans. ( d )

15. In oxy-acetylene gas welding, the flame which produces the maximum noise is - 

    a. Oxidizing flame 

    b. Neutral flame 

    c.Carburizing flame 

    d. Not dependent on the mixture

Ans. ( a )

16. In drawing, construction lines are usually- 

    a. Dashed line 

    b. Continuous lines

    c. None of the option 

    d. Dotted and dashed alternately

Ans. ( b )

17. Flash butt resistance welding is a process where- 

    a. Only current is passed, and pressure is not applied

    b. Heat is generated by passing heavy current through the parts, then applying pressure

    c. Wheel-shaped electrodes deliver force to the parts

    d. Only force is applied on raised " projection " across the surface

    Ans. ( b )

18. Steel with a carbon range of 0.05 to 0.20 percent is

    a. High-carbon steel 

    b. Ultra-carbon steel 

    c. Mild-steel

    d. Medium- carbon steel

Ans. ( c) 

19. Nozzles of oxy-acetylene cutting torches are made of

    a. Magnesium

    b. Aluminium

    c. Copper

    d. Nikel

Ans. ( c) 

20. The welding current for standard MIG welding is in the range of -

    a. 1000 - 1200A

    b. 2500 - 3600A

    c. 1200 - 1500A

    d. 100 - 300 A

Ans. ( d) 

21. CO2 is used as sheilding gas in-

    a. Resistance welding

    b. MAG welding

    c. Oxy-acetylene welding

    d. Stick welding

Ans. ( b) 

22. Which type of welding uses a continuously-fed tubular electrode and electric arc to fuse base metal? 

   a. Gas-tungsten arc welding

   b. Flux- core arc welding

   c. Gas- metal arc welding

   d. Sheilded-metal arc welding

Ans. (b) 

23. Forehand (or forward) welding is also known as-

    a. Spin welding

    b. Leftward welding

    c. Rightward welding

    d. Reverse welding

Ans. ( b) 

24. Which of the following indicates fillet weld on the ARROW SIDE according to the AWS (American welding society) standard? 

    

Ans. ( c) 

25. Identify the name of the bolt shown here. 

    a. Hanger bolt

    b. Hex bolt

    c. Eye bolt

    d. U bolt

Ans. ( a) 

26. Radiographic inspection is a non- destructive testing method that makes use of- 

     a. X-rays

     b. Magnetic powders

     c. Ultrasonic waves

     d. Radio waves

Ans. (a)