1
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
Gray cast iron blocks $$200 \times 100 \times 10\,\,mm$$ are to be cast in sand moulds. Shrinkage allowance for pattern making is $$1$$%. The ratio of the volume of pattern to that of the casting will be
A
$$0.97$$
B
$$0.99$$
C
$$1.01$$
D
$$1.03$$
2
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
In a rolling process, sheet of $$25$$ $$mm$$ thickness is rolled to $$20$$ $$mm$$ thickness. Roll is of diameter $$600$$ $$mm$$ and it rotates at $$100$$ $$rpm.$$ The roll strip contact length will be
A
$$5$$ $$mm$$
B
$$39$$ $$mm$$
C
$$78$$ $$mm$$
D
$$120$$ $$mm$$
3
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
Two 1 mm thick steel sheets are to be spot welded at a current of $$5000$$ $$A.$$ Assuming effective resistance to be $$200$$ micro-ohms and current flow time of $$0.2$$ second, heat generated during the process will be
A
$$0.2$$ Joule
B
$$1$$ Joule
C
$$5$$ Joule
D
$$1000$$ Joules
4
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
In a machining operation, doubling the cutting speed reduces the tool life to $$1/{8^{th}}$$ of the original value. The exponent $$n$$ in Taylor's tool life equation $$V{T^n} = C,$$ is
A
$$1/8$$
B
$$1/4$$
C
$$1/3$$
D
$$1/2$$
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Graduate Aptitude Test in Engineering
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