Multiple Choice Questions and Answers (MCQs) on Workshop Technology
01. 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: Option A
02. In a bilateral 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: Option D
03. A two high rolling mill consists of two rolls which rotate
(A) At the same speed and in the same direction
(B) At the same speed but in opposite direction
(C) At different speeds and in the same direction
(D) At different speeds and in the opposite direction
Answer: Option B
04. Sand wash 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 the 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: Option C
05. 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: Option B
06. Projection welding is a
(A) Continuous spot welding process
(B) Multi-spot welding process
(C) Arc welding process
(D) Process used for joining round bars
Answer: Option B
07. The cold working of metals is carried out
(A) At the recrystallisation temperature
(B) Below the recrystallisation temperature
(C) Above the recrystallisation temperature
(D) At any temperature
Answer: Option B
08. In a simple die
(A) Two or more operations are performed simultaneously at the single stroke of the ram
(B) Two or more cutting operations are performed at one station of the press in every stroke of the ram
(C) Both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram
(D) None of the above
Answer: Option D
09. 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: Option C
10. The operation of straightening a curved sheet metal, is known as
(A) Drawing
(B) Squeezing
(C) Coining
(D) Planishing
Answer: Option D
11. The flux commonly used in brazing is
(A) Zinc chloride
(B) Ammonium chloride
(C) Rosin plus alcohol
(D) Borax
Answer: Option D
12. Scribing block is used to
(A) Hold the round bars during marking
(B) Check the trueness of flat surfaces
(C) Locate the centres of round bars
(D) Check the surface roughness
Answer: Option C
13. The algebraic difference between the maximum limit and the basic size is called
(A) Actual deviation
(B) Upper deviation
(C) Lower deviation
(D) Fundamental deviation
Answer: Option B
14. Linde welding uses
(A) Neutral flame and rightward technique
(B) Oxidising flame and leftward technique
(C) Neutral flame and leftward technique
(D) Carburising flame and rightward technique
Answer: Option D
15. 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: Option A
16. The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is
(A) Less than 0.1 percent
(B) Less than 0.3 percent
(C) More than 0.3 percent
(D) Anywhere between 0.1 to 1 percent
Answer: Option C
17. 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: Option A
18. When a hole or cavity to be cored is not in line with the parting surface, then a ________ is used.
(A) Horizontal core
(B) Vertical core
(C) Drop core
(D) Balanced core
Answer: Option C
19. 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: Option C
20. In sheet metal work, he cutting force on the tool can be reduced by
(A) Grinding the cutting edges sharp
(B) Increasing the hardness of tool
(C) Providing shear on tool
(D) Increasing the hardness of die
Answer: Option A
21. 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: Option C
22. The mode of deformation of the metal during spinning is
(A) Bending
(B) Stretching
(C) Rolling and stretching
(D) Bending and stretching
Answer: Option D
23. 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: Option B
24. The temperature at which the new grains are formed in the metal is called
(A) Lower critical temperature
(B) Upper critical temperature
(C) Eutectic temperature
(D) Recrystallisation temperature
Answer: Option D
25. The surface to be left unmachined is marked on the pattern by
(A) Red colour
(B) Yellow colour
(C) Black colour
(D) Blue colour
Answer: Option C