Casting GATE 2024 Fundamental Quiz 1

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Question 1

Which one of the following is true about gating design ?

• AGating element is designed such that liquid metal can be entered into cavity with optimum velocity within a given time without causing turbulence, splashing of the liquid metal and mould erosion.
• BGating element is designed so that the pure liquid metal can be entered into cavity without air-aspiration effect.
• CGating element is designed to get the maximum casting yield.
• DAll of the above.

Question 2

Which of the following gating ratio represents pressurized gating systems?

• A1:2:2
• B1:2:3
• C3:2:1
• D1:3:2

Question 3

In casting shape factor is given by ___________, (where L = length , W=width, T= thickness).

• A(L+T)/W
• B(L+W)/T
• C(T+W)/L
• Dnone of these

Question 4

In metal casting “Skim Bob” is used for which of the following purposes _________.

• ARemoving heavier impurities
• BRemoving lighter impurities
• CBoth a & b
• DNone of the above

Question 5

A gating design for a mould of 25 cm × 50 cm × 14 cm is shown. The cross-sectional area of the gate is 5 cm². As the mould starts filling, a stopwatch is actuated at time t = 0. The reading (in sec) shown by the stop-watch when the mould will be filled is ______.

• A21.11
• B23.71
• C30.91
• D105.59

Question 6

A casting of size 100 x 50 x 50 cm was filled by top gates with manometric height in pouring basin to be 25 cm. find the time (in sec) to fill the casting. The area of gate is 5 square cm.

• A225.76
• B451.7
• C332.8
• D250

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