1
GATE ME 2007
MCQ (Single Correct Answer)
+2
-0.6
A block brake shows below has a free width of $$300$$ $$mm$$ and a mean coefficient of friction of $$0.25$$. For an activating force of $$400$$ $$N$$, the braking torque in $$N$$-$$m$$ is GATE ME 2007 Machine Design - Design of Brakes and Clutches Question 2 English
A
$$30$$
B
$$40$$
C
$$45$$
D
$$60$$
2
GATE ME 2007
MCQ (Single Correct Answer)
+1
-0.3
Which of the following engineering materials is the most suitable candidate for hot chamber die casting
A
Low carbon steel
B
Titanium
C
Copper
D
tin
3
GATE ME 2007
MCQ (Single Correct Answer)
+2
-0.6
If a particular $$Fe$$-$$C$$ alloy contains less than $$0.83$$% carbon, it is called
A
High speed steel
B
Hypo-eutectoid steel
C
Hyper eutectoid steel
D
Cast irons
4
GATE ME 2007
MCQ (Single Correct Answer)
+2
-0.6
Volume of a cube of a side $$''l''$$ and volume of sphere of radius $$' r '$$ are equal. Both the cube and the sphere are solid and same material. They are being cast. The ratio of the solidification time of the cube to the same of the sphere is
A
$${\left( {4\pi /6} \right)^3}.{\left( {r/l} \right)^6}$$
B
$$\left( {4\pi /6} \right).{\left( {r/l} \right)^2}$$
C
$$\left( {4\pi /6} \right).{\left( {r/l} \right)^3}$$
D
$${\left( {4\pi /6} \right)^2}.{\left( {r/l} \right)^4}$$
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