1000+ Workshop Technology MCQ for GATE [Solved]

1. In a compound die
A. Only one operation is performed at each stroke of the ram
B. Two or more operations are performed simultaneously at the single stroke of the ram
C. Two or more cutting operations are performed at one station of the press in every stroke of the ram
D. Both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram
Answer : C

2. In a cold chamber die casting machine, only nonferrous alloys with _________ are casted.
A. Low melting temperature
B. High melting temperature
C. Both (A) and (B)
D. None of these
Answer : B

3. A pattern maker's shrinkage rule considers
A. All pattern allowances
B. Only shrinkage allowance
C. All materials to be cast
D. All materials of the pattern
Answer : B

4. In electric resistance welding, pressure applied varies from
A. 1 to 5 MPa
B. 5 to 10 MPa
C. 10 to 25 MPa
D. 25 to 55 MPa
Answer : D

5. In a _________, both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram.
A. Simple die
B. Progressive die
C. Combination die
D. Compound die
Answer : C

6. The material which can be best cut with oxygen cutting process is
A. Mild steel
B. Brass
C. Copper
D. Aluminium
Answer : A

7. The temperature of oxy-hydrogen flame is _________ oxyacetylene flame.
A. Same as
B. Less than
C. More than
D. None of these
Answer : B

8. The cross-section of a chisel is usually
A. Rectangular
B. Square
C. Hexagonal
D. Octagonal
Answer : D

9. In arc welding, the temperature of heat produced by the electric arc is of the order of
A. 3000°C to 4000°C
B. 4000°C to 5000°C
C. 5000°C to 6000°C
D. 6000°C to 7000°C
Answer : D

10. A taper provided on the pattern for its easy and clean withdrawal from the mould is known as
A. Machining allowance
B. Draft allowance
C. Shrinkage allowance
D. Distortion allowance
Answer : B

11. The operation of cutting a sheet of metal in a straight line along the length, is known as
A. Plunging
B. Notching
C. Slitting
D. Forming
Answer : C

12. V-block is used to
A. Check the trueness of flat surfaces
B. Locate centres of round rods
C. Check the surface roughness
D. None of these
Answer : D

13. The process extensively used for making bolts and nuts is
A. Hot piercing
B. Extrusion
C. Cold peening
D. Cold heading
Answer : D

14. In a four high rolling mill, the diameter of backing up rolls is ________ the diameter of working rolls.
A. Equal to
B. Smaller than
C. Larger than
D. None of these
Answer : C

15. For welding plates of thickness less than 5 mm, its edges
A. Do not require bevelling
B. Should be bevelled to a single-V or U-groove
C. Should have a double-V or U-groove on one side
D. Should have a double-V or U-groove on both sides
Answer : A

16. A casting defect which results in general enlargement of a casting is known as
A. Shift
B. Sand wash
C. Swell
D. Scab
Answer : C

17. In a unilateral system of tolerance, the tolerance is allowed on
A. One side of the actual size
B. One side of the nominal size
C. Both sides of the actual size
D. Both sides of the nominal size
Answer : B

18. In forehand welding, the angle between the welding rod and the work is kept as
A. 30°-40°
B. 40°-50°
C. 50°-60°
D. 60°-70°
Answer : A

19. When the file is moved to and fro over the work, it is known as
A. Cross filing
B. Draw filing
C. Pull and push filing
D. None of these
Answer : B

20. In forehand welding, the weld is made
A. From left to right
B. From right to left
C. First from left to right and then from right to left
D. Either from left to right or from right to left
Answer : B

21. A neutral flame is obtained by supplying
A. Equal volumes of oxygen and acetylene
B. More volume of oxygen and less volume of acetylene
C. More volume of acetylene and less volume of oxygen
D. None of the above
Answer : A

22. The centrifugal casting method, is used for casting articles of
A. Symmetrical shape about vertical axis
B. Symmetrical shape about horizontal axis
C. Irregular shape
D. Nonferrous metal only
Answer : B

23. To prevent the body of the blade from jamming in the saw cut, the teeth of blade are
A. Strengthened
B. Sharpened
C. Set
D. All of these
Answer : C

24. The welding set up is said to have straight polarity, when
A. Work is connected to the positive terminal and the electrode holder to the negative terminal
B. Work is connected to the negative terminal and the electrode holder to the positive terminal
C. Work is connected to the positive terminal and the electrode holder is earthed
D. Work is connected to the negative terminal and the electrode holder is earthed
Answer : A

25. The blank diameter used in thread rolling will be
A. Equal to minor diameter of the thread
B. Equal to pitch diameter of the thread
C. A little larger than the minor diameter of the thread
D. A little larger than the pitch diameter of the thread
Answer : C

26. A diamond pointed chisel is used for cutting
A. Flat surfaces
B. Grooves
C. Keyways
D. V-shaped grooves
Answer : D

27. The temperature of the inner luminous cone of neutral flame is about
A. 1000°C
B. 1250°C
C. 2100°C
D. 3200°C
Answer : D

28. A rip saw
A. Is a two man saw
B. Is used for cutting along the grains of wood
C. Has a narrow blade with two wooden handles
D. All of the above
Answer : B

29. In spot welding, the spacing between two spot weld should not be less than
A. d
B. 1.5 d
C. 3 d
D. 6 d
Answer : C

30. The algebraic difference between the minimum limit and the basic size is called
A. Actual deviation
B. Upper deviation
C. Lower deviation
D. Fundamental deviation
Answer : C

31. Metal patterns are used for
A. Small castings
B. Large castings
C. Complicated castings
D. Large scale production of castings
Answer : D

32. Shift is a casting defect which
A. Results in a mismatching of the top and bottom parts of a casting
B. Results in general enlargement of a casting
C. Occurs near the ingates as rough lumps on the surface of a casting
D. Occurs as sand patches on the upper surface of a casting
Answer : A

33. The adhesiveness is the property of sand due to which
A. It evolves a great amount of steam and other gases
B. The sand grains stick together
C. It clings to the sides of a moulding box
D. None of these
Answer : C

34. During cold working process
A. Grain structure is distorted
B. Strength and hardness of metal increases
C. Close dimensional tolerance can be maintained
D. All of the above
Answer : D

35. Aluminium is the best material for making patterns because it is
A. Light in weight
B. Easy to work
C. Corrosion resistant
D. All of these
Answer : D

36. The draft or taper allowance on casting is generally
A. 1 to 2 mm/m
B. 2 to 5 mm/m
C. 5 to 10 mm/m
D. 10 to 15 mm/m
Answer : A

37. The flux commonly used in brazing is
A. Zinc chloride
B. Ammonium chloride
C. Rosin plus alcohol
D. Borax
Answer : D

38. In a ________, two or more operations are performed simultaneously at the single stroke of the ram.
A. Simple die
B. Progressive die
C. Combination die
D. Compound die
Answer : B

39. Riddle is used for
A. Smoothing and cleaning out depressions in the mould
B. Cleaning the moulding sand
C. Moistening the sand around the edge before removing pattern
D. Reinforcement of sand in the top part of moulding box
Answer : B

40. The temperature produced by oxy-hydrogen flame is about
A. 1800°C
B. 2100°C
C. 2400°C
D. 3200°C
Answer : C

41. Structural sections such as rails, angles, I-beams are made by
A. Hot rolling
B. Hot drawing
C. Hot piercing
D. Hot extrusion
Answer : A

42. A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct?
A. The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction
B. The upper and bottom rolls rotate in the same direction whereas the middle roll rotates in opposite direction
C. The bottom and middle roll rotate in the same direction
D. Any one of the above
Answer : B

43. A basic shaft is one whose
A. Lower deviation is zero
B. Upper deviation is zero
C. Lower and upper deviations are zero
D. None of these
Answer : B

44. In forehand welding, the angle between the welding torch and the work is ________ as compared to backhand welding.
A. Same
B. Less
C. More
D. None of these
Answer : C

45. If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be
A. 10 mm/m
B. 16 mm/m
C. 20 mm/m
D. 26 mm/m
Answer : D

46. For gas welding, the pressure desired at the welding torch for oxygen is
A. 7 to 103 kN/m²
B. 70 to 280 kN/m²
C. 280 to 560 kN/m²
D. 560 to 840 kN/m²
Answer : B

47. The most preferred process for casting gas turbine blades is
A. Die casting
B. Shell moulding
C. Investment moulding
D. Sand casting
Answer : B

48. The consumable electrode is used in
A. Carbon arc welding
B. Submerged arc welding
C. TIG arc welding
D. MIG arc welding
Answer : D

49. Which of the following statement is wrong?
A. The mortise gauge has two scribing pins
B. The gouges are chisels with a hollow shaped blade
C. An auger is a planing tool
D. All of these
Answer : C

50. A hacksaw blade cuts on the
A. Forward stroke
B. Return stroke
C. Both forward and return strokes
D. Cutting depends upon the direction of force
Answer : A