ফাউন্ড্রি এন্ড প্যাটার্ন মেকিং MCQ
61. Which of the following factor is not considered while selecting a kind of pattern?
Quantity of casting
Types of moulding method
Shape of the casting
Nature of moulding process
62. Which of the following factors affect the choice of a pattern at most times?
Size and complexity of the casting
Characteristics of castings
Type of molding and castings method to be used
Type of cooling rates to be provided
63. Which of the following is not a wood planing tool?
Block plane
Scrub plane
Spokeshave
Centre bit
64. What are the drawbacks of metallic pattern?
Excessive weight
Expensive
Difficult to shape
All of the above
65. After how many heats, should the refractory lining be renewed?
50-100
200-300
100-200
300-400
66. Which of the following is not a drilling or boring tool?
Brace
Counter sink bit
Auger bit
Hand vice
67. Which of the following pattern making machine works on two pulleys?
Circular saw
Band saw
Wood turning lathe
Jig saw
68. Which of the following is not a part of the pattern at most times?
Mould cavity
Molten metal
Cope
Core
69. Which of the following has the lowest melting point?
Cast Iron
White Metal
Steel
Brass
70. Piston rings are produced using which pattern?
Sweep pattern
Match plate pattern
Gated pattern
Loose piece pattern
71. Which of the following carries the mould cavity where the metal is to be poured?
Casting
Sand
Pattern
Core
72. In a three piece pattern moulding arrangement, what keeps the alignment between the two parts of the pattern?
Cope
Dowel pins
Drilling tool
Clamping tool
73. The function of a gated pattern is-
To produce small castings in mass production
To create castings of a very heavy mass
To create castings containing complex design
To create symmetrical castings
74. The life of a pattern is most likely to depend upon which of the following term?
Number of castings produced
Size of the casting
Size of the pattern
Type of cooling rate of the casting
75. High refractoriness of a material refers to its--
Slipperyness of the material
Chemical strength towards other material
Strength to withstand at high temperature
Ability to get dissolved in molten metal
76. The rotary furnace can have a capacity of 80 tons.
True
False
77. Which pattern operation is used for manufacturing wheel rims?
Gated pattern
Follow board pattern
Sweep pattern
Segmental pattern
78. A mallet comes under which type of tool?
Drilling tool
Clamoing tool l
Other pattern maker’s tool
Sawing too
79. Gated pattern. Which of the following pattern operation is cheapest?
Sweep pattern
Match plate pattern
Gated pattern
Skeleton pattern
80. Pattern cannot be constructed out of which of the following materials?
Wood
Wax
Metal
Oil