A mould having dimensions 100 mm 90 mm 20 mm is filled with molten metal through a gate with height h and C.S. area A, the mould filling time is t1 The height is now quadrupled and the cross-sectional area is halved. The corresponding filling time is t2. The ratio t2 /t1 is

A mould having dimensions 100 mm 90 mm 20 mm is filled with molten

1.	A mould having dimensions 100 mm 90 mm 20 mm is filled with molten metal through a gate with height h and C.S. area A, the mould filling time is t1 The height is now quadrupled and the cross-sectional area is halved. The corresponding filling time is t2. The ratio t2 /t1 is
A.	1/
B.	1
C.
D.	2
Answer» D. 2

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A mould having dimensions 100 mm 90 mm 20 mm is filled with molten metal through a gate with height h and C.S. area A, the mould filling time is t1 The height is now quadrupled and the cross-sectional area is halved. The corresponding filling time is t2. The ratio t2 /t1 is

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